Development and sleep- how much does it matter?

Development and sleep- how much does it matter?

Development and sleep- how much does it matter?

From the moment we bring our little ones into the world and into our arms, they are changing.

That first look at Mum, skin contact, feeding, nurturing etc. all bring on neurological and physical changes in baby to allow them to grow and survive in the outside world.

The first weeks of baby’s life also brings about incredible change, so much so that it is very hard for Mum to find her feet and keep up with this little creature who is so dependent on assistance!

This pace of development does start to slow off after the first couple of months, but it does not mean that new changes are any less important to adapt to for sleep.

The first phase of development and sleep for baby is one that often requires a lot of effort as new-borns have a very immature neurological system, and are unable to self regulate and calm.

They cry a lot as a coping mechanism to shut out stimulus, and this crying can be hard to turn off to allow for sleep.

So at this age we do all we can for calm and sleep!

Swaddling, white noise, holding, wearing, rocking, feeding, dummies, walking etc are all ways we can help baby calm and get the rest they need.

Towards the end of the newborn phase, most parents have got onto a way of settling their babies and into a routine that works, or that they can happily cope with, and life can tick on in a bit of a peaceful lull for a while during the phase, as everything works, feeding is often more settled, and baby is staying in one place!

If naps are a little off, a lot of babies still do a good stretch at night, a trade-off which is often easily managed.

However it is these crucial weeks following where things often come unstuck…

As we all know babies are very good at changing on us!

And there are some real sneaky developmental tricks that start to happen from the age of 4 months onwards, which catch a lot of us out.

Suddenly there is a little crux, and while we can still often get baby to sleep, things like catnaps and night waking start to creep in, and we start to question all the possible causes- usually the first one is a growth spurt so we often start feeding more often through the night thinking there is a new sudden hunger as to why baby is no longer doing the 7 hours they used to!

What has actually happened?

Baby is taking a developmental progression, and they have suddenly developed these sneaky little things called night time sleep cycles.

If your baby was happily catnapping 4 times a day and getting up from a short nap, or you were going back into the room and popping a dummy back in, they have suddenly moved this definitive waking or need for resettling into their night time too.

What about movement?

Often another factor is movement, and babies at this age are starting to roll, and learn to control and use their hands more, and are wanting to start to explore their world, often they start to have more wakeful periods at night to practice, and they are telling us they are ready to learn some skills for returning to sleep themselves.

All these new changes are key signs that your baby is at new phase in their growth and development- they are ready to start to have less help to be put to sleep, and are now able to start to learn this wonderful skill themselves.

When your baby is able to fall asleep themselves or with little assistance in their place of sleep, they are more likely to be able to replicate these skills and go back into another sleep cycle for good naps through the day, and longer stretches at night.

A really great sleep environment, transitioning out of a swaddle and into a sleeping bag, and a good age appropriate, balanced daytime routine will support this transition more easily for baby. The ability to put baby to sleep when we need to at this age often does remain however- so the comfort of a back-up plan is often reassuring.

Self soothing

From the age of 4-7 months, generally sleep can pretty simple once baby is self-soothing, and if you need to you can still put your baby to sleep if they haven’t settled in a set time, or in more tricky circumstances. But 7 months is often where our little ones can trick us again!

Things like the full establishment of solids, more movement and the associated separation anxiety can make settling go a little backwards, or stall if you were still putting your baby to sleep.

This is the age where complete self-soothing or only partial support is important, as our babies become very clever and start to rely on being fully assisted to sleep, and a previous 30mins learning time now becomes 30mins of protest to be put to sleep. And due to baby testing their world and overcoming their own new ability to move away from Mum, they can start to cry suddenly, louder and more forcefully to achieve Mum’s presence.

This often means Mum or Dad gets worried there is something genuinely wrong, and that baby needs more help, and often there is a bit of stress and fretting that goes along with this out of genuine concern, when objectively everything is just fine and baby will probably giggle at you as you rush into the room!

The good thing is here that baby has great skills, is supported by solids, and can fully self-soothe if we allow them to by backing off a bit, keeping super calm, consistent and patient- and if being there for your baby while they fall asleep is important to your parenting philosophy, then you can still achieve self-soothing and sleep while you are in the room, but being out of the room is also perfectly fine too- you just need to keep consistent and do what works for your baby and your family.

Again a great environment and routine makes this process easier and more successful.

The same supportive approach works well for all ages from 7 months, and is especially helpful at riding out leaps in development that occur as your baby grows into being a toddler, and is finding their own little independence in the world.

And their new found skill of tantrums!!

Don’t underestimate the importance of development and its effect on sleep

The first step in overcoming sleep hurdles starts in taking a step back and understanding where your baby is now at compared to where they have been.

Often steps back in sleep are signs your baby is ready for Mum or Dad to take a step forwards with them! Respecting your baby’s own little world and new skills can also go a long way in more smoothly riding out relapses and settling battles.

Written by Sophie Lloyd,

Sophie is a certified infant and child sleep consultant and a qualified nurse.

You can read more about Sophie 

email Sophie for sleep help today


  • Empowered: Feel empowered as a Mum as you learn to understand your growing baby's needs and cues.
  •  Simple effective settling: Gentle, proven self soothing, evidence based techniques.
  •  Content happy baby and parents: Better sleep creates content babies & happy parents.
  •  Freedom: Predictable routines and longer nights creates freedom. Solve your sleep problems for more freedom.
  •  Work with your babies circadian rhythm: Work with your babies biological clock for faster easier results.
  •  Awesome naps & nights: You'll create consistent naps and nights with our support.



Leave a comment

* Required fields

Please note: comments must be approved before they are published.