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

> Your 12-month-old baby — development milestones, feeding, sleep and play, plus what to focus on this month. General, NHS-aligned guidance.

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# 
Your 12-month-old baby

 
Happy birthday — a whole year of firsts

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

 
 Published 11 July 2026  

      
 
Quick answer — What should a 12-month-old baby be doing? 

 
At 12 months old, happy birthday — a whole year of firsts. At a year, some babies are walking and others are still cruising or crawling — all normal. Every baby develops at their own pace — these are typical ranges, not a checklist.

    
## Development at 12 months

 
At a year, some babies are walking and others are still cruising or crawling — all normal. Many say one to three words with meaning, wave, clap, point to show you things, and follow simple one-step instructions. Their personality shines.

 
## Feeding

 
From 12 months your baby can move from formula (if used) to full-fat cows' milk as a main drink, and eat three meals plus snacks from the family menu. Breastfeeding can continue for as long as you both want.

 
## Sleep

 
Most one-year-olds sleep around 11–14 hours across the night and one or two naps. The transition to one nap often happens between 12 and 18 months.

 
## Play & connection

 
Pretend play (feeding a teddy, pretend phone calls), simple puzzles, and lots of outdoor time all support this stage. Keep reading daily — it is the single best thing for language.

 
## Focus this month

 
Your baby is due the 12-month vaccinations (including MMR and others). A one-year review with your health visitor is also usual around now.

   
## When to check in

 
Talk to your health visitor or GP if your one-year-old is not making sounds or gestures to communicate, not weight-bearing on their legs, or has lost skills — early support makes a real difference.

   
## Your 12-month-old baby: common questions

    What should a 12-month-old baby be doing?   
 At a year, some babies are walking and others are still cruising or crawling — all normal. Many say one to three words with meaning, wave, clap, point to show you things, and follow simple one-step instructions. Their personality shines. Remember this is a typical range — healthy babies reach milestones at very different times. 

   How much should a 12-month-old baby sleep?   
 Most one-year-olds sleep around 11–14 hours across the night and one or two naps. The transition to one nap often happens between 12 and 18 months. 

   What should I feed a 12-month-old baby?   
 From 12 months your baby can move from formula (if used) to full-fat cows' milk as a main drink, and eat three meals plus snacks from the family menu. Breastfeeding can continue for as long as you both want. 

     
## 
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 
 
   [← 11 months](/baby/month/11/) [All months](/baby/month/)   

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.

    
## 12 months at a glance

   Stage One year  Feeding Milk + solids  This month Happy birthday — a whole year of firsts     
Feeding this stage

 
 Ready for solids? Our [weaning guide](/baby/weaning-guide-when-and-how-to-start/)
walks through when and how to start.