Split Nights: Why Is Your Child Awake for Hours Overnight?

You finally get your child to sleep… then 2am arrives and instead of resettling, they are wide awake.

They’re smiling, chatting, playing, or simply looking like they’re ready to start their day.

Welcome to the world of split nights.

Split nights can be incredibly frustrating for parents because they often feel like a night waking that has gone on for too long.

But the approach is slightly different.

A split night is usually a sign that something in your baby's sleep balance needs looking at.

The first place I look? The whole 24 hours.

When parents come to me with split nights, the first thing we do is look at their baby's sleep data.

Not just the night.

We need to understand:

• What time they wake in the morning

• How much daytime sleep they are having

• How long their naps are

• Their bedtime

• Their total sleep across 24 hours

Sleep is a balance between the body's need for sleep (sleep pressure) and the internal body clock (circadian rhythm). If your baby has already had enough sleep across the day and night, there may not be enough sleep pressure built up to support one long stretch overnight.

Is your baby getting too much sleep?

This is one of the most common causes I see with split nights.

Sometimes, completely understandably, parents try to help their baby recover after a difficult night. They allow a lie-in, offer longer naps, or bring bedtime earlier.

The problem is that this can sometimes create a cycle.

A poor night leads to extra daytime sleep → extra daytime sleep reduces sleep pressure → another disrupted night.

It becomes a bit of a chicken-and-egg situation.

This doesn't mean your baby should be kept awake all day or that naps aren't important.

Babies need sleep for their development.

It simply means we need to make sure the amount of sleep they are getting matches their individual needs.

Why tracking matters

One of the biggest mistakes parents make is guessing.

Every baby is different. Some babies naturally need more sleep, while others need less.

Sleep recommendations are given as ranges because there is such a wide variation between children.

Tracking for 7-10 days gives us the information we need to make informed decisions.

Instead of asking:"How do I get my baby to sleep through the night?"

We can ask:"Does my baby actually have enough sleep pressure to sleep through the night?"

That small change in thinking can make a huge difference.

What can help with split nights?

Depending on the cause, support may include:

• Keeping a consistent morning wake time

• Reviewing total daytime sleep

• Adjusting nap timings

• Ensuring enough awake time before bed

• Looking at whether your baby's current routine still matches their age and sleep needs

There isn't a one-size-fits-all answer.

The routine that works beautifully for one baby might be completely wrong for another.

The goal isn't to force your baby into a schedule.

The goal is to understand their sleep needs and create a routine that supports them.

References

Borbély AA. A Two Process Model of Sleep Regulation. Human Neurobiology. 1982.

Paruthi S, Brooks LJ, D'Ambrosio C, et al. Recommended Amount of Sleep for Pediatric Populations: A Consensus Statement of the American Academy of Sleep Medicine. Journal of Clinical Sleep Medicine. 2016.

National Sleep Foundation. Sleep duration recommendations for children.