2 Month Old Baby Milestones: What They Can Accomplish!

Last reviewed: November 6, 2026. Checked against current guidance from the CDC, the American Academy of Pediatrics (HealthyChildren.org) and Nemours KidsHealth.

Changes can be hard to notice when they’re happening slowly and over a short period of time. However, babies can start to develop certain capabilities when they’re just 2 months old.

At this age, babies can start achieving amazing developments in their lives.

As a parent, each day for you must be exciting to notice your baby’s milestones. It is something every parent looks forward to.

New parents often have difficulty recognizing baby milestones. There’s no need to worry. Here is everything you need to know about 2 month old baby milestones so you don’t miss any. Let’s get started.

Physical Growth

A child who has lived for 2 months can get pretty big in size during this time. You need to acknowledge how your baby has gotten a little chubbier. This is a physical growth milestone. Other developments regarding your baby could be the growth in height, plus the increase in head size. Here are the average monthly growth rates for babies in their first few months. Every baby grows at their own pace, and your pediatrician will track your baby’s growth at each checkup:

• Length increase of about 1 to 1.5 inches (2.5 to 4 cm) a month
• Weight increase of about 1.5 to 2 pounds (0.7 to 0.9 kg) a month
• Head circumference increase of about half an inch (1.25 cm) a month

There are other physical changes that a 2 month old baby experiences, however you may not be privy to them. These changes include the body. These milestones can consist of more movements by your baby.

This is one of the major 2 month old baby milestones. Here are some more examples:

• You might notice that your baby can hold their head up when lying on their tummy. Give your baby tummy time while they are awake and you are watching to help build their neck muscles. Never leave your baby alone on their tummy, and always put them on their back to sleep.
• Your baby’s physical movements will also start developing a flow. This means that there will be less jerking of hands and legs, but rather more purposeful movements.
• At this age, many babies bring their hands to their mouth and suck on their fists or fingers. This is normal, and it can help them calm themselves.

You should note that these milestones are simply a standard. Everyone is unique in their own way and takes their time. Your 2 month old baby will have their own milestones in their own time. The CDC lists milestones that most babies (75% or more) reach by a certain age. If your 2 month old is not holding their head up on their tummy, smiling at you or reacting to loud sounds, talk to your pediatrician.

However, whatever their growth may be, make sure you cherish these moments with your little one. After all, they won’t stay this tiny in your arms for so long.

Neural Milestones

Apart from physical growth, babies grow mentally as well. This means they would be experiencing more cognitive growth and would show reactions. Your 2 month old baby’s brain is growing fast, and you will see it in how they watch you and react to you.

This could be as simple as being happy during a happy scenario. Here are some of the neural milestones for your 2 month old baby developments.

• Happy Reactions – At this point your baby should be smiling when you talk to them or smile at them. This is the age where babies often react to different surroundings. Hence, there should be large smiles to brighten up your day. Sometimes that’s all you need to get through the day.
• Recognition – A 2 month old baby looks at your face and watches you as you move. Many seem happy to see you when you walk up to them. They are getting to know the faces of the people who are around them most, like their parents.
• Socially Receptive – Many 2 month old babies start being socially receptive at this age. This means that they would be making noises from their mouths to tell you how they feel. This will include cooing or gurgles. Because your baby would be learning how to talk pretty soon, this is the ideal moment to have these developments.

Other Milestones

There are many other 2 month old baby milestones that you might have missed. Let’s cover those too. You should observe that these milestones may occur early or with some delays. Here are some of these.

• Teething – A first tooth usually appears around 6 months. Some babies get teeth a little earlier and some later, but it is unusual to see teeth at 2 months. Once the first tooth comes in, brush it twice a day with a rice-grain smear of fluoride toothpaste.
• Sleeping – Babies up to 3 months old need about 14 to 17 hours of sleep in 24 hours. Some 2 month olds start to sleep a longer stretch at night, but most still wake up to feed, and that is normal. Getting a baby to sleep is one of the most difficult jobs to do. Always place your baby on their back to sleep, on a firm, flat surface with nothing soft in the sleep space.

With these milestones, also come some problems when a baby is growing. This means that when your 2 month old is developing certain traits, they might also be at risk.

Specifically, babies could catch colds. You might notice a stuffy or runny nose or a cough. If your baby is younger than 3 months and has a temperature of 100.4°F (38°C) or higher, taken rectally, call your pediatrician right away.

Apart from this, 2 month old babies can also have tummy troubles. They might be constipated at some point, but also experience diarrhoea. Call your pediatrician if you are worried, especially if your baby has fewer wet diapers than usual.

With these you need to note that these changes might not happen automatically. You need to assist your child with some of these milestones as well.

This assistance could mean that showing your baby some facial expressions when you tell them how you feel. You also need to take care of all the feeding requirements in terms of your baby.

If the 2 month old baby is not eating their formula or drinking their milk well, then it might hinder their growth. This is why you need to ensure that the baby is well fed. At this age, babies need only breast milk or formula. They don’t need water, juice or other foods until about 6 months.

These 2 month old baby developments can help you keep track of your baby’s growth.

Plus, it is effective in observing any anomalies early on in their life. This is an advantage as many issues can be fixed earlier in life.

Other than this, all these developments help you recognize your baby’s growth. This makes you realize that their growth is an achievement.

It helps reassure you that you are doing a good job at parenting. Sometimes, that is all the affirmation you need in life.

This article is for general information and isn’t a substitute for medical advice. Always contact your pediatrician with questions about your baby’s health.