3 Month Baby Development – What To Expect

The 3-month mark is a big one, and most parents are usually happy to reach it. Not only is your baby looking big, but they are also no longer a newborn. Being 3 months old means they have already discovered that there is more to life than just sleeping, eating, and crying all the time.

You will find your baby squealing, gurgling, smiling and generally being a delight for everyone around. Their personality is also taking shape and they are becoming their own little person who has likes and dislikes.

It is a fun time. Both you and your baby will finally get to sleep a little bit more than in the last 2 months. This is because your baby’s stomach is bigger and can hold more milk. As a result, sleeping is easier. The maximum time they can sleep at 3 months is about 6 hours.  

3 Month Baby Development - What To Expect
Image Source: Wikipedia.org

Traits At 3 Months

At this point, your baby probably has a favorite lullaby or a favorite toy that makes them get excited. All of these character traits come out during the 3rd month. That is why it is a good one for both parent and child. You are both understanding each other better during this time.

You will be able to notice your baby reaching for objects that are within their reach and spontaneously smiling whenever they are happy. Your baby can now turn around to the direction of your voice.

Your baby will want to familiarize themselves with their environment. So, take your baby on walks so they can see things such as trees, other people, houses, other babies, toys, etc.

A good point to note here is that your baby is beyond compare. Do not try to compare their achievements with those of another baby.

Instead, monitor your baby to see what they can and cannot do as per the documented milestones. Only take your baby to the pediatrician if something is seriously wrong, or for the normal immunization visits.

Reflexes At 3 Months

At 3 months, your baby still has a few of the reflexes they were born. These include the rooting reflex, which helps him locate the breast or feeding bottle, and the tonic neck reflex that helps the baby turn his head from one side to another.  These will disappear in the fourth month.


Thumb Or Finger Sucking

At this age, babies begin to suck on their fingers or thumbs because this is the age that they “discover” their hands. They will also keep their hands very close to their mouths as they are extremely fascinated by chewing their fingers. They may find a lot of comfort in sucking their thumbs.

While most parents will be inclined to try and break their baby’s habit of sucking on their thumbs, it is not necessary. All babies develop the habit of sucking their fingers in order to soothe themselves. It is good to actually encourage this, as it teaches them to be self-reliant.

Holding The Head Up

Your baby at 3 months should be able to hold their head up at an angle of 90 degrees.  But this is from the twelfth week. Their neck strength is improving, and when you hold them up, you should be able to see very little head wobbling.

At 3 months, they should also have enough upper body strength to support their chest and arms while lying on their stomach. Also, they may have enough lower body strength to be able to stretch their legs and kick in the air.

Rolling On Their Tummy

During changing times, you will notice that when you place your baby on a flat surface, they may roll onto their tummy. This may happen when you least expect it. So, always be careful about leaving the baby unattended on the bed or in a place they can easily fall.

What you can do to encourage this is to start changing your baby on the floor or on a flat surface.

Gaining Strength

Your little one will start to strengthen their hand muscles. So, be ready to help whenever you can. You can put a rattle on their hand and tug on the big end gently. This will help your baby use their hands which will, in turn, strengthen them.

3 Month Baby Development - What To Expect
Image Source: Wikipedia.org


Taking care of your baby is now getting easier. By the end of the 3rd month, things will certainly be running smoothly for both you and the baby.

There aren’t too many things that should cause you to worry. Just stick to the programmed doctor visits and ensure to give your baby all of the recommended immunizations.