---
title: "Sleep Regressions by Age: What's Normal & What Helps | Mellow Kids"
description: Sleep was working, then suddenly it wasn't. Why regressions happen at each age, how long they last, and how to get through them.
---

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# Sleep regressions

Sleep was working, and then overnight it was not. Why it happens at each age, how long it lasts, and what to do meanwhile.

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Newborn · 0–3m

Infant · 4–12m

Toddler · 1–3y

Preschool · 3y+

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## [![toddler crying](https://www.mellow.kids/hs-fs/hubfs/GettyImages-114509392-5a67f4518023b90019328750-1.png?width=900&height=600&name=GettyImages-114509392-5a67f4518023b90019328750-1.png) Latest Is Your 3-Year-Old Experiencing a Sleep Regression? Preschool · 3y+ 3 min read](https://www.mellow.kids/blog/is-your-3-year-old-experiencing-a-sleep-regression?hsLang=en)

### [![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) Understanding and Managing Sleep Regressions in Young Children 4 min read](https://www.mellow.kids/blog/understanding-and-managing-sleep-regressions-in-young-children?hsLang=en)

### [![2-years-old playing with flower](https://www.mellow.kids/hs-fs/hubfs/juan-encalada-ibDqBhx8vqg-unsplash-1.jpg?width=640&height=420&name=juan-encalada-ibDqBhx8vqg-unsplash-1.jpg) 2-Years-Old Sleep Regression Toddler · 1–3y 3 min read](https://www.mellow.kids/blog/2-years-old-sleep-regression?hsLang=en)

### [![Baby sleeping](https://www.mellow.kids/hs-fs/hubfs/jelleke-vanooteghem-wzOyUkuLy7E-unsplash-1.jpg?width=640&height=420&name=jelleke-vanooteghem-wzOyUkuLy7E-unsplash-1.jpg) 18-Month-Old Sleep Regression Toddler · 1–3y 3 min read](https://www.mellow.kids/blog/18-month-old-sleep-regression?hsLang=en)

### [![Discover what causes the 4 month sleep regression and learn how to help your baby adjust. Get your family back to restful nights today!](https://www.mellow.kids/hs-fs/hubfs/1784100665431_Mother-soothing-baby-during-sleep-regression-1.jpeg?width=640&height=420&name=1784100665431_Mother-soothing-baby-during-sleep-regression-1.jpeg) 4 Month Sleep Regression: What Parents Need to Know Newborn · 0–3m Infant · 4–12m 11 min read](https://www.mellow.kids/blog/4-month-sleep-regression?hsLang=en)

### [![Tired baby yawning in bed beside a teddy bear during the 8-10 month sleep regression](https://www.mellow.kids/hs-fs/hubfs/10-month%20512x340.jpg?width=640&height=420&name=10-month%20512x340.jpg) 8-10 Month Sleep Regression: Why It Happens and What Helps Infant · 4–12m 8 min read](https://www.mellow.kids/blog/8-10-month-old-sleep-regression-causes-and-solutions?hsLang=en)

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