Newborn Development: What to Expect in the First 3 Months

The first three months can feel like a blur of feeds, nappies, cuddles and broken sleep, but your newborn is changing remarkably quickly underneath it all. During these early weeks, you may notice your baby becoming more alert, looking at faces, reacting to sounds, making their first little noises, smiling socially and gradually gaining more control over their head and body.

There is no need to treat newborn development as a weekly test. Babies develop at different rates, and individual skills do not always appear in the same order. Developmental milestones are useful reference points, not deadlines.

Here is what you may notice from birth to around three months, along with simple ways to support your baby’s development without turning everyday life into a programme of activities.

What happens during newborn development?

Development in the first three months involves much more than physical growth. Your baby is beginning to learn how to interact with people and process the world around them.

Early development includes:

Movement and physical control, including gradually improving head control and increasingly active arm and leg movements.
Communication, beginning with crying and progressing towards other sounds.
Social interaction, such as looking at faces and eventually smiling in response to you.
Vision and hearing, as your baby becomes increasingly attentive to faces, voices, movement and sounds.
Learning, including watching, listening and discovering that their actions can prompt responses from the people around them.

These areas develop alongside one another. A simple moment when you look at your baby, speak and wait for a response can involve social, language, visual and cognitive development at the same time.

The first month: getting used to the world

During the earliest weeks, your baby is adjusting to a completely new environment. Many movements are still reflexive and can appear sudden or uncoordinated.

Your newborn may spend short periods quietly looking at you, particularly when you hold them close. Faces are an important source of interest, and your voice is part of the familiar sensory world they are learning to recognise.

You may notice your baby:

looking briefly at your face
reacting to sounds
moving their arms and legs
turning or moving their head
opening and closing their hands
settling in response to being held or spoken to
becoming more alert for short periods

At this point, interaction can be very simple. Hold your baby, talk to them during everyday care and respond to their signals. There is no need to constantly entertain a newborn.

Your baby’s head and neck still need support while being held. During awake periods, supervised tummy time provides an opportunity to begin strengthening the muscles used for later movement.

Around 2 months: smiles, sounds and growing awareness

By around two months, many parents begin to notice more obvious social interaction.

The US Centers for Disease Control and Prevention lists several developmental milestones that most babies can do by two months. These include looking at a caregiver’s face, appearing happy when a familiar caregiver approaches and smiling when someone talks or smiles at them.

Communication is changing too. Your baby may begin making sounds other than crying and reacting to loud sounds.

You might notice them watching you as you move or looking at an interesting toy for a few seconds. Their physical movements are developing as well. CDC milestones at two months include moving both arms and both legs, briefly opening the hands and holding the head up while on the tummy.

These are useful examples of typical development, but they are not a checklist your baby has to complete on their two-month birthday.

Around 3 months: more purposeful interaction

There is not a neat switch that happens when your baby reaches three months. Instead, many of the abilities emerging during the previous weeks gradually become more noticeable.

Your baby may spend longer interacting with you, become increasingly interested in their surroundings and make a wider variety of sounds. You may notice that their movements look more controlled than they did during the first newborn weeks.

Their growing interest in communication can make everyday interactions particularly rewarding. The NHS recommends holding babies close and looking at them while talking, chatting about what you are doing during daily routines, singing and repeating the sounds your baby makes.

You do not need special scripts or educational toys. Talking about a nappy change, singing while getting your baby dressed or copying a little coo and waiting to see what happens next are all simple ways to interact.

How newborn communication develops

Crying is your newborn’s earliest and most obvious way of communicating, but it is not the only one.

Babies communicate through movements, facial expressions, attention and eventually a growing collection of sounds. By two months, the CDC includes making sounds other than crying among its developmental milestones.

One of the easiest ways to encourage early communication is simply to respond.

The NHS suggests talking to your baby during ordinary routines and repeating their sounds back to them. These little exchanges introduce the back-and-forth pattern of conversation long before your baby can understand or say words.

You can also sing. Your baby does not care whether you can carry a tune. Hearing your voice and the rhythm of language is what matters.

If your household uses more than one language, the NHS advises talking to your child in whichever language feels comfortable to you and notes that children can adapt well to growing up with more than one language.

How movement changes in the first 3 months

A newborn has relatively little voluntary control over their body. Over the first few months, that begins to change.

Early movements may look jerky, but gradually you may notice stronger and more controlled movements. Your baby’s ability to support their head also develops over time.

At two months, the CDC lists holding the head up while on the tummy, moving both arms and both legs and briefly opening the hands among common milestones.

Supervised tummy time while your baby is awake gives them an opportunity to practise using their neck, shoulder and upper-body muscles. Stay with your baby throughout tummy time.

Some babies enjoy being on their tummy more than others. If yours becomes unsettled quickly, you do not need to turn it into a battle. Ask your health visitor for suggestions if you are finding tummy time difficult or are concerned about your baby’s movement.

One of the loveliest changes in these early months is the gradual shift towards more obvious interaction.

Your newborn may initially spend much of their alert time simply watching. Over the following weeks, you may start seeing clearer responses to your presence.

By two months, CDC social and emotional milestones include looking at a caregiver’s face, calming when spoken to or picked up, seeming happy when a caregiver approaches and smiling in response to being spoken to or smiled at.

These interactions can be brief. A baby who looks away, becomes fussy or seems tired may simply need a break.

Following your baby’s cues is more useful than trying to keep them engaged constantly. Quiet time is part of the day too.

Simple ways to support development

Supporting newborn development does not require an overflowing toy box or a complicated activity schedule.

Many of the most useful opportunities happen during things you already do.

You can:

hold your baby close and talk to them
make eye contact when they are alert and interested
respond to their sounds
sing songs or nursery rhymes
talk through everyday activities such as changing and dressing
give them supervised opportunities for tummy time while awake
allow them to look at your face and safe, interesting objects
notice when they seem tired or ready for a break

The NHS specifically recommends talking, singing and repeating the sounds babies make during the first six months.

You are not trying to rush your baby towards the next milestone. You are simply giving them safe opportunities to interact, move, listen and explore.

What if my baby was born prematurely?

If your baby arrived early, comparing their development directly with a baby born at full term can be misleading.

The NHS states that for babies born prematurely, developmental age is calculated from the original due date rather than the actual birth date until the child is two years old.

Your baby’s healthcare team can explain how corrected age applies to their individual development.

This is another reason milestone charts should be used as guides rather than rigid expectations.

Health and development checks in the early months

In the UK, your baby’s development is not something you are expected to monitor entirely on your own.

The NHS offers regular health and development reviews during the early years. A health visitor usually carries out a new baby review within 10 to 14 days after birth, where you can discuss your baby’s development as well as other aspects of newborn care.

At around six to eight weeks, babies are invited for a physical examination, usually with a GP. This includes checks of areas such as the eyes, heart and hips, as well as measurements of growth.

Keep your baby’s personal child health record, often called the red book, handy for appointments. The NHS also suggests keeping its developmental milestones section up to date.

These appointments are opportunities to ask questions. You do not need to wait until a scheduled review if you have a concern in between.

When to get professional advice

There is a broad range of typical newborn development, but concerns are worth discussing rather than dismissing because another baby developed differently.

Speak to your health visitor, GP or another qualified healthcare professional if you are worried about your baby’s development, including how they move, respond to sounds, look at people or communicate.

The CDC advises parents to act early if a child is not meeting one or more developmental milestones, has lost a skill they previously had or if there are other concerns about development.

The NHS similarly advises that you can contact your health visitor or GP if you have concerns between routine development reviews.

A milestone guide cannot assess your individual baby. If something feels unusual or you are worried, asking for professional advice is appropriate, even if you cannot put your concern into precise words.