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Infant Development 3-6 Months

Infant Development 3-6 Months

Are you unsure if your Baby is developing in time?


Keep reading and find out about the Infant Development of your 3-6 Month Old!

Have you ever caught yourself comparing your baby to the infant development of someone else’s baby?

A little spoiler: We probably all did. We are so worried that our baby is not developing fast or good enough, but in most cases, all that worrying is completely unnecessary. But how can we know if the worrying is appropriate or not? When should we start worrying about the infant development of our babies? Well, that’s why I am writing this post. To give you all the answers you need!

During my research, I found a dozen different websites, read a bunch of blog posts, and even gleaned through some infant development brochures that were laying on my pediatrician’s desk. All this information was so helpful to me that I decided to sum it up for you. 

Although every baby develops in a very different way and pace, it’s still important to know what to look out for. So today I will be sharing the expected Infant Development Of A 3-6-Month-Old. 


Babies have now learned that you are their person of trust. What they don’t understand quite yet is that you are a separate person. Babies think that life is happening inside them and they are the ones who make all of it happen. It will take them a few more months to understand that you can actually take yourself away from them.

They are now learning that relationships are very rewarding, so they love interacting with you and strangers threw smiles and squeaks. Some babies even have full „conversations“ with you and get excited whenever you respond. Just be aware that babies can become over-stimulated, so try to avoid too much excitement, otherwise, they may cry and need to be calmed down.

Between 3-6 Months, Your Baby Will:

  • smile, laugh and squeak
  • recognize and like other people
  • enjoy being bathed and talked to
  • be more interested in their surroundings
  • pay more attention to what is going on around them

Physical Development & Motor Skills 

Infant Development - Infant Milestones

Babies usually start to gain more control over their bodies and slowly develop some self-awareness. You will find your baby looking at their hands and grabbing for their feet. Now it’s very important to implement more tummy time. While they start kicking and waving with their legs and arms, all muscles, including their back and neck muscles, will get stronger. Tummy time will also encourage your baby to start rolling around and help them learn to crawl.

Between 3-6 Months, Your Baby Will:

  • roll over from the front to the back
  • lift their head and chest while on tummy
  • begin to discover their hands & play with fingers
  • grab and play with their feet and toes while laying on back
  • hold objects for a short time
  • bring toys and objects to their mouth
  • sit while being held by their hands
  • grab for objects, hair, and glasses
  • support their own weight when stood and their feet (for a short time) 

Hearing & Seeing

Babies are slowly starting to understand the world around them. You may watch your Baby looking from one object to another and try grabbing for it. They can also follow you with their eyes while walking around.

It is important that they explore their surrounding. So while walking around with your newborn, give them some time to concentrate properly on certain objects. You may notice that your baby turns their head around whenever they hear you talk or call their name. That’s because they are becoming more familiar with sounds and recognize different voices.


Between 3-6 Months, Your Baby Will:

  • start to understand the world around them
  • look for objects and try to grab them
  • follow you with their eyes
  • explore their surrounding by concentrating on objects
  • recognize familiar voices
  • turn their head whenever they hear you or a very loud noise 

Speech & Language

You might think that babies start to speak once they say the first words. Not quite correct. They start way before that by making all those cute little noises and sounds. If you imitate these „baby words“, you are actually answering your baby. And if you respond to your baby’s cry to meet their needs, you are showing them that you understand what they are saying, which is basically the start of communication for them.


Between 3-6 Months, Your Baby Will:

  • coo and gurgle
  • begin to babble and listen
  • „talk“ to toys and objects
  • turn their head towards sounds and voices
Infant Development - Infant Milestones

Safety First

Always watch out for possible dangers concerning your baby:

  • Since your baby can now grab for objects, watch out for any kind of choking hazard.
  • Watch out when your baby starts rolling over since they can roll onto their face and suffocate.
  • Never leave them alone and unattended, unless they are in a safe place like a baby swing.

In case your baby shows any of the following features, talk to your pediatrician just to make sure that everything is okay:

  • not turning to look for you when you speak
  • never smiling or cooing
  • hardly ever kicking legs or waving arms
  • never following objects with eyes
  • always unhappy, unsettled or crying

In case you are showing any of the following signs, make sure to get help as well:

  • constantly unhappy or anxious
  • overwhelmed all the time
  • not getting along with your baby as expected

Make sure to check out my other Newborn Posts.

Read these if you would like to know more about your Baby’s Development in the first year:


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