four-month regression

July 21, 2022

How long does the four-month sleep regression last? The four-month sleep regression lasts… forever. Now, before you throw your phone (or whatever device you’re reading this on) across the room, hear me out! While I know it’s wreaking havoc on your household right now, the 4-month regression actually marks an exciting developmental progression for your […]

The Four-Month Sleep Regression

How long does the four-month sleep regression last?

The four-month sleep regression lasts… forever. Now, before you throw your phone (or whatever device you’re reading this on) across the room, hear me out! While I know it’s wreaking havoc on your household right now, the 4-month regression actually marks an exciting developmental progression for your baby.

Before now, your baby only had two stages of sleep: REM and non-REM sleep. They moved between these two cycles easily, and they were able to sleep pretty much anywhere through pretty much anything. The four-month regression occurs anytime between 3-5 months, and changes their sleep cycles permanently so that they are their sleep patterns are now exactly like ours.

You may not realize it, but you wake up throughout the night multiple times. And now, so does your baby (every 45 minutes-2 hours to be exact.) The difference is that when we wake up, we’re able to fall back asleep quickly, and most of the time we don’t even remember it.

Your baby on the other hand is now becoming much more awake between sleep cycles than they’re used to, and it’s confusing for them. In addition, they may only know how to fall back asleep using whatever sleep association that they have become accustomed to (usually feeding or rocking.) They come out of a sleep cycle and then cry out for whatever thing helped them fall asleep in the first place.

Depending on how well your little one was sleeping before, they may or may not get this transition without some support. Most babies require some assistance through this big change in their sleep.

“Can I start sleep training now?”

Yes! I actually recommend sleep training at some point around this time for a few reasons. First, your baby is actually asking for your help to figure this thing out. Sleep training is helping them learn to fall asleep independently.

Also, between the ages of 4-5 months, babies are very adaptable to this type of change. The older they get, it (typically) becomes a little more difficult to introduce a new way of falling asleep.

If you’re going through this regression right now, and want some support through the process, I would love to help! Check out this post on What It’s Like to Work with Me, or book a free discovery call to learn more about the process!

Until then, hang in there mama (or dada) 🙂

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