Adventures in Infant Sleep

In the lead up to O’s first Christmas, in December 2020, I thought I had this whole parenting thing figured out. My three month old son was sleeping soundly from 10 pm to 7am and was having regular two hour naps throughout the day. He was rocked to sleep for all of his sleeps but it worked. I was well rested, had time to get all my Christmas preparations done - which included hand stitching a stocking for the little one - and even had time to relax and unwind. I had given birth to a unicorn: one of those mythical babies that just know how to sleep. I was flying high!


O is my first child. Those of you who have survived the first year of parenting can likely guess what will happen next. For those of you who are only beginning your journey, or who maybe haven’t started it yet, let me let you in on a little (to me at least) known secret: sleep can regress. I say “can” because I am sure there are one or two of you out there who will insist that your child never went through a sleep regression; who have a child that has slept through the night since birth and never once had a streak of bad nights. If you are out there, know that I am envious of you.


Sleep regressions are usually linked to developmental leaps and the four month sleep regression is a brutal one. At four months old, a baby’s sleep pattern is changing and their sleep cycles are maturing. They begin to shift from a two stage sleep cycle of REM and non-REM sleep to an adult sleep cycle which has four stages (https://www.sleepfoundation.org/baby-sleep/baby-sleep-cycle). A baby won’t finish the four month sleep regression able to sleep like an adult but when they come out the other end of it, and they will, they will be able to sleep for longer periods at night.


The beginning of January 2021 is when O began the four month sleep regression. It started innocently enough. A short nap here; a night waking there. The interruptions were so slight that I barely recognised it for the first few days. After a couple of weeks his two hour naps had shortened to thirty minutes and his (and my) uninterrupted, nine-hour night sleep transformed into short 1-2 hour sleeps with lots of crying - from both of us.


It was at this time that I was diagnosed with postpartum depression. In hindsight, I had had postpartum depression since my son was born (maybe even before) but I was unable to identify it because most of the more obvious symptoms (low mood, crying, irritability, loss of energy) were only intolerable when I was sleep deprived, something that hadn’t happened since O was a few weeks old. What I had felt since O was born were feelings of anxiety, hopelessness, worthlessness and inadequacy. These feelings were what led me to believe that there was nothing different about my child; that nothing had changed within him and therefore the problem with his sleep must be me. Therefore it was my responsibility to fix it.


Anyone who has ever been pregnant will be able to tell you that when you’re pregnant everyone and their mother feels like they are in the position to give you advice. Most of this advice is unsolicited and the giver of advice will look at you like you’ve just kicked a puppy if you don’t immediately pull out a pen and paper and take detailed notes demonstrating just how grateful you are for their help (this is hyperbole and I know that 90% of the time it is coming from a place of love and support but you get the picture). Because of this tendency to tell parents how to parent, I had been given more than one book on how to get my baby to sleep and even more opinions on whether or not to sleep train (a very divisive topic in my circle). Each side essentially boiled down to “if you don’t do it this way, you don’t love and care for your child”. What a load of bullshit.


I believed the problem was me. I believed that if I just followed the right advice, found the right sleep training program, performed just the right dance under the full moon, my baby would sleep well. So I read book after book, visited parenting forum after parenting forum, and googled article after article. What did all this reading teach me: I had committed a cardinal sin of infant sleep. In rocking my child to sleep, I wasn’t showing him love, I was creating a sleep crutch. My baby would never be able to sleep on his own if I didn’t fix this problem that I had stupidly created! I should have known that rocking a baby to sleep would cause irreparable harm to his sleep for the rest of his life! Had I put my enjoyment of cuddles with my baby over developing good sleep habits? How could I have been so selfish!?


In preparation for the birth of our son, A and I read a couple of books about baby brain development. One of these books was John Medina’s Brain Rules for Baby. The book goes over the science behind infant brain development in easy to understand language and explains how to use that science to nurture your baby’s brain. One of the chapters in this book that I paid close attention to was the “sleepy baby” chapter. Medina explains the science behind both the Cry-It-Out (CIO) method and the Nighttime Attachment Parenting (NAP) method.