# 4 Month Old Baby: Milestones, Feeding & Sleep | Clever Mum

> Your 4-month-old baby — development milestones, feeding, sleep and play, plus what to focus on this month. General, NHS-aligned guidance.

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Young baby

 
# 
Your 4-month-old baby

 
Rolling, grabbing and belly laughs

   [ CP ](/authors/parenting-desk/)  
 By [ Clever Mum Parenting ](/authors/parenting-desk/) · Parenting guides 

 
 Published 11 July 2026  

      
 
Quick answer — What should a 4-month-old baby be doing? 

 
At 4 months old, rolling, grabbing and belly laughs. Around four months some babies roll from front to back, grab and shake toys deliberately, and laugh out loud. Every baby develops at their own pace — these are typical ranges, not a checklist.

    
## Development at 4 months

 
Around four months some babies roll from front to back, grab and shake toys deliberately, and laugh out loud. They babble with more expression and love watching faces and copying expressions.

 
## Feeding

 
Still milk only — even if your baby seems hungrier or is watching you eat, the signs of readiness for solids (sitting with support, good head control, hand-to-mouth coordination) usually arrive closer to 6 months.

 
## Sleep

 
The "4-month sleep regression" is common — sleep briefly gets more broken as your baby's sleep cycles mature. It passes. Keep your safer-sleep setup and routine consistent through it.

 
## Play & connection

 
Offer easy-to-grip rattles and textured toys. Narrate your day, play peekaboo, and give plenty of floor time for rolling and reaching. Repetition is how babies learn.

 
## Focus this month

 
Now is a good time to start reading about starting solids so you feel ready at 6 months — whether you lean towards purées, baby-led weaning or a mix.

   
## When to check in

 
Speak to your health visitor if your baby is not holding their head steady, not reaching for objects, or not making sounds back to you — always in the context that every baby has their own pace.

   
## Your 4-month-old baby: common questions

    What should a 4-month-old baby be doing?   
 Around four months some babies roll from front to back, grab and shake toys deliberately, and laugh out loud. They babble with more expression and love watching faces and copying expressions. Remember this is a typical range — healthy babies reach milestones at very different times. 

   How much should a 4-month-old baby sleep?   
 The "4-month sleep regression" is common — sleep briefly gets more broken as your baby's sleep cycles mature. It passes. Keep your safer-sleep setup and routine consistent through it. 

   What should I feed a 4-month-old baby?   
 Still milk only — even if your baby seems hungrier or is watching you eat, the signs of readiness for solids (sitting with support, good head control, hand-to-mouth coordination) usually arrive closer to 6 months. 

     
## 
Sources & further reading

 
 *  [ Baby — development and milestones ](https://www.nhs.uk/start-for-life/baby/)  — NHS Start for Life 
*  [ Safer sleep advice ](https://www.lullabytrust.org.uk/safer-sleep-advice/)  — The Lullaby Trust 
 
   [← 3 months](/baby/month/3/) [All months](/baby/month/) [5 months →](/baby/month/5/)  

This is general information, not medical advice — every baby develops differently and the
          ranges here are typical, not targets. Your health visitor and the NHS red book are your
          personal sources of truth. If you're ever worried about your baby's development, health or
          feeding, speak to your health visitor or GP. Reviewed August 2026.

    
## 4 months at a glance

   Stage Young baby  Feeding Milk only  This month Rolling, grabbing and belly laughs     
Feeding this stage

 
 Milk is still all your baby needs. Our [weaning guide](/baby/weaning-guide-when-and-how-to-start/)
walks through when and how to start.