Hey guys, Cinderism here! 👋🏻
DISCLAIMER: I’m not a sleep consultant or medical professional — just a mom who had a very challenging sleeper and went down the rabbit hole of baby sleep research. Everything here is based on my personal experience and what I’ve learned along the way. This concept really helped me understand my baby’s sleep, and helped me apply this subs suggestions so I wanted to share in case it helps your family too!
That being said, I wanted to give back to this insanely helpful community by contributing some knowledge/findings to this group! This group has helped me troubleshoot my baby’s sleep, and provided so many great resources that I finally feel like I’m in a place where I can give back and help! I am entering the toddler years, so I am still quite a busy lady, but I’ll always try to reply to comments. 😊
So let’s get into the guts of what this post is! It’s all about 24 hour sleep needs. What it is, how to find your baby’s need, what to do with that number, and who this can help! This shouldn’t be a foreign concept to this sub by any means, (check out this sleep budget post from the mods) but I’ll expand on that concept.
So what IS a 24 hour sleep need?
It’s the total amount of sleep a person needs in a day (or 24 hours 😉) and includes both night sleep and day sleep. We all know newborns require more sleep, and sleep needs decrease as we age. This is also known as a sleep budget!
This number is highly individual, and this is why we have the dreaded low-sleep needs babies, average-sleep needs babies and the magical unicorn high-sleep needs babies!
REMEMBER: your baby’s “average” sleep need comes from what they actually sleep — not what charts say they should sleep.
Great — Now how do we find this magic number?
This part takes some time and commitment — but if you’re struggling with your baby’s sleep, it’s well worth it IMO!
There are two major rules:
- You’ll need to track your baby’s sleep (yes — any and all sleep) for 7 days (or more!).
You can use an app for this such as Huckleberry, Baby Tracker (or similar) or a spreadsheet! If your baby is awake in their crib - this is NOT sleep. If your baby is feeding and is asleep, count that as sleep time. If they are opening their eyes a lot, then they are awake!
But Cinderism — I’m unable to commit to 7 days… Now what?
Deep breath! I know life doesn’t always allow for a week’s worth of tracking. You can use less days — just be mindful that the smaller your sample, the more that day-to-day fluctuations can influence your average!
If you use less, it will still give you a starting point. You may need to tweak the number a bit (usually by ~15-30 minute intervals) based on how things go.
- Try not to cap both naps and night sleep at the same time (you can cap either naps or nights but not both).
If you cap their naps, then don't cap their night. If you cap their night, then don’t cap their naps. If you cap everything, you might miss sleep your baby would otherwise take, which can give you an inaccurate sleep budget.
Once you have your data — it’s time to do some math. We need to average this number (stick with me here — I’ll explain how and I’ll be here to assist when I can!).
Get your calculators out — It’s time for some math! 🤓
I’ll break this down step-by-step as simply as I can! Bear with me here — I’ll include an example.
Start off by converting your time in hours and minutes to just minutes: number in hours x 60 THEN add your remaining minutes.
Example: 12h 48m. 12 x 60 = 720.
720 + 48 = 768.
Then we will average your week: add each number / by total number of days.
Example: 780 + 768 + 744 + 713 + 768 + 731 + 723 = 5,227.
5,227 / 7 = 746.714.
Then we will convert back from just minutes to hours and minutes. This is a two step process!
First we’ll find out number in hours: total minutes / 60. Round to a whole number.
Example: 746.714 / 60 = 12.445. So 12.
Second we’ll find out remaining minutes: total minutes - (hours x 60). Round to a whole number.
Example: 746.714 - (12 x 60) = 26.714. So 27.
Now we have our magic number! 🎉
In our example, this would be 12h 27m. We can change this to 12h 30m for easy scheduling and dispersement of sleep!
Okay cool, I have a magic number — now what?
Congrats! You found your baby’s unique sleep need. You can use this number as a guide to cap total daily sleep and build a more consistent schedule. This can help reduce those big swings between good days and those rough days. You can also cross-check with your current schedule and find out if it’s appropriate and disperse your baby’s sleep better.
Let’s use our baby in our example. They had a 12.5 hour sleep need, but we were expecting 14 hours of sleep. This baby would only have 10 hours of awake time when in reality they needed 11.5 hours. That can definitely cause some issues!
That example baby’s old schedule could look like: 3/3/4, but with our knowledge, we know that baby actually needs 3/4/4.5 or 3.5/3.5/4.5 or even a nap drop to 5.5/6 or 5/6.5.
In our example: if we kept 2 naps, we could try a 10.5 hour night, so that leaves 2 hours of day sleep. 1 hour per nap. If we dropped to 1 nap, then you could still do 10.5 hours overnight with 1 nap capped at 2 hours or try an 11 hour night and cap that 1 nap to 1.5 hours.
So who can this help?
This concept can be especially helpful for babies experiencing split nights, early wakes, short naps, and the dreaded “is my baby under-tired or overtired” debate.
Ooof — that was a long read! 🫣 Thank you to whoever took the time to read this post.
Much love — Cinderism ❤️