Baby Development Milestones Week 3

Baby Development Milestones Week 3Source:


Congratulations! You are now in week 3 of your baby’s development journey. This week is full of exciting milestones for your little one. From physical changes to personality development, there’s so much going on. In this blog post, we’ll take a closer look at the key baby development milestones for week 3 to help you understand what to expect.

Physical Milestones

During week 3, your baby is growing rapidly, and you’ll notice significant physical changes. Your baby’s weight will have increased by about 10% from their birth weight, and their body will start to straighten out as the neck strengthens. Your baby’s digestive system is also maturing, and they are likely to have more regular bowel movements.

Your baby’s eyes will begin to focus better, and they will start to track movements with their eyes. They may also start to recognize faces and respond to familiar voices. However, don’t worry if your baby’s eyes don’t always seem to focus correctly. It’s normal for newborns to have some difficulty focusing their eyes, and they will get better with time.

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Social and Emotional Milestones

During week 3, your baby will start to develop a personality. They will begin to show individual preferences and display different moods. You’ll start to notice your baby responding to your voice and touch, and they’ll become more vocal and expressive.

Your baby may also start to develop a social smile in response to your smile or touch. This is a great milestone as it indicates that your baby is starting to understand social cues and is developing emotional bonds.

Cognitive Milestones

In week 3, your baby’s cognitive development will continue to progress. They will be able to differentiate between sounds, and you’ll notice that they respond to familiar noises such as your voice or a lullaby. This is an excellent opportunity for you to start singing and talking to your baby to encourage their cognitive development further.

Your baby may also start to display some problem-solving skills. You might notice them trying to suck their thumb or fingers to self-soothe when they are feeling uncomfortable or hungry.

Frequently Asked Questions

1. How much should my baby be sleeping during week 3?

During week 3, your baby will sleep for most of the day and night, typically between 16-17 hours a day. However, don’t worry if your baby doesn’t seem to be sleeping this much. Every baby is different, and some may sleep more, while others may sleep less.

2. How often should I be feeding my baby?

Newborn babies need to be fed on demand, which means whenever they show signs of hunger. During week 3, your baby may be feeding every 2-3 hours, but this can vary. Always follow your baby’s cues and feed them when they are hungry.

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3. When should I start tummy time with my baby?

Tummy time is an essential part of your baby’s development as it helps to strengthen their neck muscles and promotes motor skills. You can start doing tummy time with your baby from week 3, but only for a few minutes at a time. Always supervise your baby during tummy time and never leave them unattended.

4. How can I help my baby’s cognitive development during week 3?

Talking and singing to your baby can greatly benefit their cognitive development during week 3. You can also play simple games with them, such as peek-a-boo, to encourage their problem-solving skills. Remember, every interaction you have with your baby is an opportunity for their cognitive development.

5. When should I be concerned about my baby’s development?

Every baby develops at their own pace, so it’s essential not to compare your baby to others. However, if you notice that your baby isn’t reaching any of the expected milestones or seems to be falling behind, it’s always best to speak to your pediatrician. Early intervention can greatly benefit your baby’s development.


Week 3 of your baby’s development is full of exciting milestones for both you and your little one. From physical changes to emotional and cognitive development, there’s so much going on. Remember to enjoy this time with your baby and always follow their cues. Every interaction you have with your baby is a chance to encourage their development further.

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By administrator

I am a child development specialist with a strong passion for helping parents navigate the exciting and sometimes challenging journey of raising a child. Through my website, I aim to provide parents with practical advice and reliable information on topics such as infant sleep, feeding, cognitive and physical development, and much more. As a mother of two young children myself, I understand the joys and struggles of parenting and am committed to supporting other parents on their journey.

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