Baby Won’t Sleep at Night? Causes, Simple Fixes & When to Worry

If Your Baby Won’t Sleep at Night, You’re Not Alone

If your baby won’t sleep at night, no matter what you try, it can feel exhausting and overwhelming. Many parents find themselves awake for hours, trying everything from feeding to rocking, and still wondering why their baby won’t settle.

As a primary healthcare nurse and a mum, I’ve seen how stressful this can be. The lack of sleep, combined with worry, can quickly make you feel like you’re doing something wrong.

The truth is, most baby sleep problems are very common and are usually linked to simple causes like hunger, overtiredness, or discomfort.

If your baby is struggling with sleep, it is often connected to other common issues such as feeding discomfort, trapped wind, teething, or illness. Understanding these related causes can help you respond more calmly and effectively.

In this guide, I’ll walk you through:

• The most common reasons babies struggle to sleep
• Practical steps you can try tonight
• What is normal (and what isn’t)
• When to seek medical advice

Why Your Baby Won’t Sleep at Night

Sleep difficulties are very common in babies, and there is usually a reason behind them — even if it’s not obvious at first.

Understanding what might be causing your baby to wake or struggle to settle can help you respond more calmly and choose the right approach.

Overtiredness

One of the most common reasons babies won’t sleep is actually being too tired.

When babies stay awake longer than they can comfortably manage, their bodies release stress hormones. This can make them more restless, harder to settle, and more likely to wake frequently.

What this may look like:

• Crying that escalates quickly
• Rubbing eyes or ears
• Arching their back or becoming unsettled

This is why watching your baby’s sleep cues is often more effective than sticking to a strict schedule.

Hunger or Growth Spurts

Babies don’t always follow a predictable feeding pattern, especially during growth spurts.

During these periods, your baby may:

• Wake more often at night
• Feed more frequently
• Seem unsettled even after a feed

This can feel sudden and exhausting, but it is usually temporary and part of normal development.

Trapped Wind or Gas

Trapped wind is a very common cause of unsettled sleep, especially in younger babies.

Even a small amount of gas can cause discomfort when your baby is lying flat, making it harder for them to relax or stay asleep.

Signs to look for:

• Pulling legs up towards the tummy
• Squirming or twisting
• Crying shortly after feeds

Helping your baby release wind can sometimes make a noticeable difference to their sleep.

Need for Comfort

Babies are not used to being alone, especially in the early months. Wanting to be held or close to you is a normal developmental need, not a bad habit.

As babies grow, they may also go through phases where they need extra reassurance, particularly at night.

This can show up as:

• Waking soon after being put down
• Settling only when held or rocked

Providing comfort during these stages helps your baby feel secure.

Illness or Discomfort

If your baby suddenly starts struggling with sleep, it’s important to consider whether something physical may be bothering them.

Check for:

• Fever
• Teething discomfort
• A blocked or runny nose
• Skin irritation or rash

If your baby seems more unsettled than usual or difficult to comfort, it’s always worth looking for other symptoms.

What Is Normal Baby Sleep?

Babies don’t sleep in long, predictable stretches like adults do. Instead, they naturally sleep in shorter cycles, wake more easily, and often need help settling back to sleep. This is completely normal, especially in the early months when their sleep patterns are still developing.

How Baby Sleep Changes by Age

Baby sleep needs vary, and it’s important to remember that no two babies are the same.

Most newborns sleep around 14–17 hours in 24 hours, usually in short stretches, which is why frequent waking is completely normal in the early months.

As babies grow, they may begin to sleep for longer periods at night. However, waking is still very common in the first year, especially during growth spurts, illness, or developmental changes.

Newborn (0–3 months)

• Sleep in short cycles throughout the day and night
• Wake every 2–3 hours for feeding

3–6 months

• May start having slightly longer sleep stretches
• Still wake for feeds and comfort

6–12 months

• Longer stretches possible
• May wake due to teething or habits

Even frequent waking can still be normal.

How to Help Your Baby Sleep (Step-by-Step)

Instead of trying everything at once, it helps to go through a few simple checks. Many sleep problems improve once the underlying cause is addressed.

Step 1 – Check Basic Needs

Start with the basics, as these are the most common reasons babies wake or struggle to settle.

Ask yourself:

• Could my baby still be hungry?
• Does the nappy need changing?
• Is my baby too hot or too cold?

Even something small, like a slightly wet nappy or being overdressed, can make it difficult for a baby to sleep comfortably.

Step 2 – Create a Calm Environment

Babies are very sensitive to their surroundings, especially at night.

Try to:

• Dim the lights
• Keep noise levels low
• Avoid too much stimulation before bedtime

A calm, predictable environment helps your baby’s body recognise that it’s time to sleep, making it easier for them to settle.

Step 3 – Use Soothing Techniques

Not all babies settle the same way, so you may need to try a few methods to see what works best.

Common soothing techniques include:

• Gentle rocking or swaying
• Swaddling (for younger babies)
• Soft white noise

The goal is not to “perfect” a method, but to find what consistently helps your baby feel calm and secure.

Step 4 – Burp Your Baby

Trapped wind is often overlooked but can disturb sleep, especially after feeds.

Even if your baby doesn’t seem uncomfortable, try to:

• Burp during and after feeding
• Hold your baby upright for a few minutes

This can help prevent discomfort that may cause your baby to wake shortly after being put down.

Step 5 – Watch Wake Windows

Keeping your baby awake too long can actually make sleep harder.

When babies become overtired, their bodies release stress hormones, which can make them more restless and difficult to settle.

Look out for early sleep cues such as:

• Rubbing eyes
• Yawning
• Becoming fussy

Responding to these signs early often makes it much easier for your baby to fall asleep.

A Simple Bedtime Routine That Works

A consistent bedtime routine doesn’t have to be complicated. In fact, simple and predictable routines are often the most effective.

The goal is to help your baby gradually recognise that certain steps mean it’s time to wind down and sleep.

Here’s an easy routine you can follow:

Bath

A warm bath can help your baby relax and signal the transition from active time to quiet time.

It doesn’t have to be long — even a few minutes can be enough. Some babies find baths very soothing, while others may become more alert, so adjust based on your baby’s response.

Feed

Feeding before sleep helps ensure your baby is comfortable and not waking shortly after due to hunger.

Many babies naturally become sleepy during feeds, which can make the transition to sleep easier.

Quiet Cuddle Time

After feeding, spend a few minutes holding your baby in a calm, quiet way.

This might include:

• Gentle rocking
• Soft talking
• Skin-to-skin contact

This step helps your baby feel secure and settled before being put down.

Dim the Lights

Lowering the lights helps your baby’s body start producing melatonin, the hormone that supports sleep.

Try to keep stimulation low:

• Avoid bright lights
• Reduce noise
• Keep the environment calm

Over time, this becomes a strong sleep cue.

Put Baby Down Calm and Drowsy

Place your baby down when they are calm and sleepy, but not fully asleep.

This helps them gradually learn how to settle in their sleep space, which can make night wakings easier to manage.

Common Mistakes Made (When Your Baby Won’t Sleep at Night)

Sometimes, sleep struggles are not just about your baby — small everyday habits can also make settling more difficult without you realising it.

The good news is that these are usually easy to adjust once you’re aware of them.

Keeping Your Baby Awake Too Long

It’s a common belief that keeping a baby awake longer will make them sleep better — but the opposite is often true.

When babies become overtired, their bodies release stress hormones, which can make them more restless and harder to settle.

You may notice:

• More intense crying
• Difficulty calming down
• Frequent waking

Responding to early sleep cues usually leads to easier settling.

Too Much Stimulation Before Bed

Bright lights, noise, and active play close to bedtime can make it harder for your baby to wind down.

Babies need a calm, predictable environment to help their bodies shift into sleep mode.

Simple changes like dimming the lights and reducing activity can make a noticeable difference.

Not Burping Properly After Feeds

Trapped wind is often overlooked, especially if your baby seems fine at first.

However, discomfort can build up once your baby is lying down, leading to:

• Restlessness
• Crying shortly after being put down
• Frequent waking

Taking a few extra minutes to burp your baby properly can sometimes prevent this.

Relying Only on Feeding to Settle

Feeding is naturally comforting, and it’s completely normal for babies to fall asleep while feeding.

However, if feeding becomes the only way your baby can settle, they may struggle to resettle during normal night wakings.

This doesn’t mean you should stop feeding — just that it can help to also use other soothing methods like rocking or gentle settling.

Changing Routines Too Often

It’s easy to try many different approaches when you’re tired and looking for something that works.

But frequent changes can make it harder for your baby to recognise sleep cues and feel secure.

Keeping things simple and consistent, even if not perfect, usually works better over time.

Small Changes Can Make a Big Difference

You don’t need to fix everything at once. Even adjusting one or two of these habits can improve your baby’s sleep and make nights feel more manageable.

When to Worry If Your Baby Won’t Sleep

While most sleep difficulties are normal, there are times when it’s important to seek medical advice.

You should get your baby checked if you notice any of the following:

• A fever, especially in a young baby
• Refusing feeds or feeding much less than usual
• Repeated vomiting
• Signs that your baby may be in pain, such as persistent crying or an unusual, high-pitched cry
• Unusual drowsiness or difficulty waking your baby

If your baby cannot be settled at all or something just does not feel right, trust your instincts. It is always better to have them assessed.

If your baby’s symptoms include fever, vomiting, or refusal to feed, you can read more here:

Child Fever: What is Normal and What Isn’t

Child Vomiting But No Fever: Causes, Red Flags, and What Parents Should Know

Dehydration In Children: Signs, Symptoms, and Safe Rehydration – A Nurse’s Guide

Frequently Asked Questions

Why is my baby suddenly not sleeping?

This is often linked to growth spurts, developmental changes, or overtiredness. These phases can temporarily disrupt sleep patterns but usually settle with time.

Is waking every hour normal?

Yes, especially in younger babies.

Should I let baby cry it out?

Young babies need responsive care. Responding to crying helps them feel safe and secure.

Summary – What to Remember

Most baby sleep problems are linked to normal developmental changes, feeding patterns, or temporary discomfort.

Start with the basics, keep things calm and consistent, and trust your instincts. If something feels wrong, don’t hesitate to seek medical advice.