---
title: Child Sleep & Development Blog — Mellow Kids | Infant 4-12m
description: Infant 4-12m | Gentle, science-backed guidance on your child's sleep and development. Free expert content to support every stage of the first years.
image: https://www.mellow.baby/hubfs/A852D33F-3A7D-46BF-BBCA-F9A0E06AAE8C.jpg
---

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# Infant (4–12 months)

Naps, night wakings, regressions, and the big sleep changes of the first year.

## [![Baby doesn't sleep](https://www.mellow.kids/hs-fs/hubfs/DALL%C2%B7E%202024-06-03%2014.53.14%20-%20A%20realistic%20cozy%20nursery%20scene%20at%20night%20with%20a%20crib%2c%20soft%20lighting%2c%20and%20soothing%20decor.%20A%20tired%20parent%20holding%20a%20baby%2c%20trying%20to%20soothe%20them%20to%20sleep-1.webp?width=640&height=420&name=DALL%C2%B7E%202024-06-03%2014.53.14%20-%20A%20realistic%20cozy%20nursery%20scene%20at%20night%20with%20a%20crib%2c%20soft%20lighting%2c%20and%20soothing%20decor.%20A%20tired%20parent%20holding%20a%20baby%2c%20trying%20to%20soothe%20them%20to%20sleep-1.webp) Why Won’t My Baby Sleep Through the Night? It's a question many parents ask: why won’t my baby sleep through the night? Several factors can influence a ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/why-wont-my-baby-sleep-through-the-night)

## [![breastfeeding](https://www.mellow.kids/hs-fs/hubfs/wren-meinberg-NFH6LovuJso-unsplash.jpg?width=640&height=420&name=wren-meinberg-NFH6LovuJso-unsplash.jpg) Reverse Cycling Reverse cycling is a common phenomenon observed in infants, where they consume most of their calories by ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/reverse-cycling)

## [![baby and bear](https://www.mellow.kids/hs-fs/hubfs/minnie-zhou-40UwNzsJOt0-unsplash.jpg?width=640&height=420&name=minnie-zhou-40UwNzsJOt0-unsplash.jpg) Short Naps: Gentle Strategies For Lengthening Naps Up to 5 months of age, it’s normal to have short naps. The average nap length in the first 4 months is 20 to ... Infant · 4–12m 4 min read](https://www.mellow.kids/blog/short-naps-gentle-strategies-for-lengthening-naps)

## [![Baby sleeping](https://www.mellow.kids/hs-fs/hubfs/minnie-zhou-5ncvXQ3Ii7A-unsplash.jpg?width=640&height=420&name=minnie-zhou-5ncvXQ3Ii7A-unsplash.jpg) Teaching Your Baby to Fall Asleep Independently Around the 3-4 month mark, there are major developmental progressions that can disrupt sleep. One of them is ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/teaching-your-baby-to-fall-asleep-independently)

## [![Baby teething](https://www.mellow.kids/hs-fs/hubfs/colin-maynard-CEEhmAGpYzE-unsplash-1.jpg?width=640&height=420&name=colin-maynard-CEEhmAGpYzE-unsplash-1.jpg) Teething: Common Signs and How to Help Your Baby Teething typically occurs between the ages of 5 to 30 months, although the actual discomfort associated with ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/teething-common-signs-and-how-to-help-your-baby)

## [![Swaddling baby](https://www.mellow.kids/hs-fs/hubfs/kelly-sikkema-B7-_bkpgcD4-unsplash.jpg?width=640&height=420&name=kelly-sikkema-B7-_bkpgcD4-unsplash.jpg) Transitioning Away from Swaddling: When and How to Do It Swaddling is a common practice that helps newborns feel secure and comfortable, leading to better sleep. ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/transitioning-away-from-swaddling-when-and-how-to-do-it)

## [![Baby sitting up](https://www.mellow.kids/hs-fs/hubfs/juan-encalada-Uvlir2v-dXE-unsplash.jpg?width=640&height=420&name=juan-encalada-Uvlir2v-dXE-unsplash.jpg) Transitioning From 3 to 2 Naps The transition away from the third nap is a milestone in your baby's sleep pattern as it indicates that your ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/transitioning-from-3-to-2-naps)

## [![](https://www.mellow.kids/hs-fs/hubfs/nsplsh_5762433958496c5162346b~mv2_d_4928_3264_s_4_2%20(1)-1.webp?width=640&height=420&name=nsplsh_5762433958496c5162346b~mv2_d_4928_3264_s_4_2%20(1)-1.webp) Improve baby sleep - Wake window by age The wake window is the maximum amount of time a baby can tolerate being awake between naps and before ... Infant · 4–12m 1 min read](https://www.mellow.kids/blog/improve-baby-sleep-wake-window-by-age)

## [![baby sleeping in the dark](https://www.mellow.kids/hs-fs/hubfs/bastien-jaillot-eJwSOguD1rE-unsplash.jpg?width=640&height=420&name=bastien-jaillot-eJwSOguD1rE-unsplash.jpg) The Benefits of Room Darkening for Baby's Sleep A good night's sleep is vital for a baby's growth and development, and the environment plays a significant ... Infant · 4–12m 2 min read](https://www.mellow.kids/blog/the-benefits-of-room-darkening-for-babys-sleep)

## [![](https://www.mellow.kids/hs-fs/hubfs/nsplsh_5762433958496c5162346b~mv2_d_4928_3264_s_4_2%20(1).webp?width=640&height=420&name=nsplsh_5762433958496c5162346b~mv2_d_4928_3264_s_4_2%20(1).webp) How to Improve Frequent Night Wakes Below are some tips to help your little one have better sleep at night, and reduce night wakings. Follow the ... Infant · 4–12m 4 min read](https://www.mellow.kids/blog/how-to-improve-frequent-night-wakes)

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