The 4 Month Sleep Regression

By Baby Sleep Magic

I remember this phase like it was yesterday as it was one of the most challenging moments I faced after becoming a new parent.


DSC 3240 2.jpg ED copy 2The 4-month sleep regression is not a phase, it is PERMANENT. I do not like to call it a “regression” as it is more of a
“progression”! For the first three months of your baby’s life they will spend more time asleep than awake, however after four months, our babies move from the newborn phases of sleep into more adult-like sleep stages. Your baby’s brain becomes more active and they will experience more time in a lighter, non-REM sleep stage which causes them to wake up more frequently, generally after 45 minutes.


If you have previously fed, held, patted or bounced your baby to sleep then this is when you may find it is no longer working as effectively as it was. This is simply because your baby is more aware of their surroundings and therefore, will wake up more frequently to check their environment. Due to this, if anything is different, e.g. if you are no longer feeding, patting or bouncing then they will be quick to let you know about it.


What happens?

When you place your “sleeping” baby in their cot, the chances are they will only sleep between 20 -45 minutes and will then wake up quite alarmed. In order for them to go back to sleep they will require the same process as you carried out previously including feeding, rocking or bouncing, Does this sound familiar?? It is rather like us falling asleep on the lounge and waking up outside on the grass!



What you may experience:

  • Your baby will not sleep – full stop.


  • You spend more time trying to get them to sleep than they are asleep


  • They suddenly require assistance in going to sleep and staying asleep


  •  Increased crying, irritability and fussiness during the day


  • Not feeding well throughout the day due to being easily distracted, which then creates multiple night wakings because they are genuinely hungry


  • Naps have become shorter (usually around 45mins)


How long does it last?


Regressions generally last anywhere from a few days to a few weeks, however the four-month regression is different. If you have not taught your baby to sleep on their own without you feeding or rocking them to sleep, then this is a good time to start as this is where you can establish positive sleep associations to replace the current sleep prop – YOU!

  • Stick to an age-appropriate routine as children thrive on routine and consistency. It makes them feel secure knowing what comes next. Ensure you pay close aPenIon to your baby’s sleep cues and wake window to avoid over-tiredness.


  • Incorporate some wind-down time before naps and bedtime to give your child the best chance of relaxing before sleep. Take your baby into a quiet room where you can read a book, sing a song, or offer a cuddle before going to sleep.


  • Incorporate a bedtime routine and keep it simple and no longer than 30-45 minutes. A warm bath, a massage, a full feed, and then place your baby in the cot awake. You can also offer an earlier bedtime if necessary. Sleep regressions can lead to missed sleep, which can lead to over-tiredness.


  • Keeping your baby swaddled during this time can be of real benefit as It will help keep them calm and feeling more secure during this time of change.


  • This is a great time to introduce a comforter as In my experience babies with comforters are happier, settle better and are generally more content when sleeping independently.


  • Be flexible, if that means naps are in the pram, car or carrier more often than usual then don’t stress and don’t beat yourself up. Having your child sleep in the car or on the go is going to be better than having to deal with an overtired baby.


  • Optimise the sleeping environment by ensuring that your child’s room is dark and that you have white noise on (keep the white noise on for the whole duration of the nap and throughout the night) , also note that an ideal room temperature for your child is between 19-22 degrees.


  • Ensure your baby is FULL and maintain adequate feeds during the day, do not be afraid to offer more feeds, more often. The four-month regression often coincides with a growth spurt that may make your baby hungry.


  • Start to place your baby down drowsy but awake. You can help your baby soothe by offering either physical or verbal reassurance. Note that this takes time, so consistency is the key.


  • Lastly, remain calm and patient to your baby’s needs as babies feed off our energy. If you are calm, they are calm. No matter how bad you think things are, keep in mind, everything is fixable!







My name is Chantal and I am the owner of Baby Sleep Magic, as well as the mum of two boys!


My journey into the sleep consulting world began due to my own personal experience after my first son was born in 2012.


After 4 months of sleepless nights & many tears, I had lost all confidence as a new mum.


There’s so much contradicting information from social media, google, friends & family & even professionals on how to get my little one to sleep, how was I meant to make any sense of it all, I was feeling totally overwhelmed.


It was at this point I began my own journey into the world of infant sleep, I successfully obtained my Maternity & Child Sleep Consultant Diploma and then continued to study every aspect on baby and toddler sleep that was available. What I learnt changed my parenting experience forever. I then put all this knowledge into practice with my second son with great success!


After my newfound confidence and knowledge, I just wanted to help anyone who would listen, this included friends, neighbours, playgroup mums, kindy mums, anyone with a baby really! After successfully helping my friends and friends of friends, it was at this point I founded Baby Sleep Magic. After thousands of successful in-home consultations and workshops locally, along with virtual online consultations around the world, I knew it was time to reach out to parents globally, so that’s why we went on the journey to create The Baby Sleep Magic App.


Inside the app you will have access to all of my knowledge and advice that I have learnt whilst successfully carrying out thousands of one-on-one consultations, all this information is compressed into easy to follow evidence based packages that will provide you with all the necessary skills, knowledge & confidence you need to improve your child’s sleeping habits. Since the very beginning of my journey helping parents has truly become my passion!