A month of sweetness and discoveries.
Congratulations! Your little one has just reached the milestone of their first month. Between the first nights and the first gazes, we accompany you to transform every uncertainty into a moment of bonding.
Evolution at 1 month: A new world
At four weeks old, your infant is already no longer quite the newborn of the first hours. Their body is strengthening, their senses are awakening, and their character is slowly starting to take shape. It is a period of major transition where axial hypotonia (trunk flexibility) meets nascent muscular strength.
Gross Motor Skills
Baby is starting to try to lift their head when on their tummy. Their movements are still jerky and reflexive, but strength is building. It is crucial to continue supporting their neck well during every handling.
Weight & Height
+ 800g to 1kg
On average since birth. Every curve is unique.
Sleep
About 16 to 20 hours per day, in short intervals.
Sensory Awakening
Their vision is becoming clearer. They now perceive faces at a distance of 20 to 30 cm — exactly the distance between your arms and your eyes. Strong contrasts (black and white) and bright colors capture all their attention.
Behavior and Primitive Reflexes
At one month, birth reflexes are still very present and form the foundation of their future development. You will likely observe the Moro reflex (startle with arms spread) during a sudden noise, or the grasping reflex when you slide your finger into their small hand.
Tummy time: This is an essential but sometimes frustrating exercise for them. For a few moments, they manage to lift their nose off the mattress. These muscular efforts prepare for the next stages of motor skills.
"Did you know? Their disorganized leg movements are actually an active exploration of space and their own body. Do not try to hinder them, except for light swaddling if it calms them for sleep."
Rhythm Simulator: 1 Month
Help baby find their balance between wakefulness and sleep. Enter the time of their last wake-up to estimate the next sleep window.
Results will appear here...
Based on an average wake window of 60 to 90 minutes for a 4-6 week old baby.
Sleep: A cycle in construction
At 1 month, the distinction between day and night is just beginning to emerge. Sleep is fragmented because it is regulated by physiological needs, mainly hunger. Don't be surprised if your baby seems to sleep very lightly: this is "active sleep", a crucial phase for their brain development.
- ✔ Position: Always on the back, on a firm mattress and without pillows or stuffed animals.
- ✔ Temperature: Keep the room between 18°C and 20°C for optimal comfort.
- ✔ Rituals: Start micro-habits (soft music, dimmed light) to signal the coming of night.
Crying: Their only language
Crying is not a whim. It is the only way for your baby to express a need. At one month, you are probably starting to differentiate the hunger cry (nervous, rhythmic) from the fatigue cry (grumpy, rubbing eyes) or discomfort cry (sharp, sudden).
Serenity tip:
If crying intensifies at the end of the day, it's often "release crying". Hold your child, talk to them softly. Your presence is their best remedy for the day's stress.
Feeding & Well-being
Whether breastfed or bottle-fed, feeding at 1 month remains a full-time activity that requires listening and patience.
Meal Rhythm
An average of 6 to 8 meals per 24 hours. Listening to hunger signals (mouthing, head movements) takes priority over the clock. Breastfeeding is on demand, bottle-feeding generally follows 3 to 4-hour intervals.
Colic Management
This is the age when digestive discomforts often appear. A gentle clockwise belly massage or a warm hot water bottle can work wonders to soothe abdominal tension.
Medical Follow-up
The first-month check-up is essential. It allows for checking growth, initial clinical exams, and discussing vitamins (D and K). This is the ideal time to ask all your questions.
The start of a conversation
It is around the end of the first month that you might receive the most beautiful gift: the intentional smile. Unlike the reflex smile ("angel" smile) that occurs during sleep, this one is a direct response to your face and voice.
To stimulate awakening and learning, prioritize quiet moments. Talk to them, sing nursery rhymes, or use a mobile with contrasting colors. No need to invest in complex toys: the human face remains the most fascinating object for them.
The attachment bond strengthens every day through skin-to-skin and babywearing. These moments of physical proximity regulate their heart rate and stress.
And you, how are you doing?
The first month is an endurance test. Accumulated fatigue, hormonal upheaval, and social pressure can weigh heavily. Remember that a fulfilled parent is the best environment for a baby.
Take turns
If possible, delegate household chores or ask for help for a few hours of sleep.
No guilt
It is normal to feel overwhelmed. Every parent learns on the job, through trial and error.
Frequently Asked Questions (FAQ)
My baby has small pimples on their face, is this normal?
Yes, it is likely baby acne due to your hormones from the end of pregnancy. It usually disappears on its own within a few weeks without treatment.
How many times a day should I change their diaper?
An average of 6 to 10 times. A diaper heavy with urine is a good indicator that baby is eating enough.
Can we already establish a rhythm?
At 1 month, the rhythm is the baby's. You can, however, set up light cues (daylight for daytime, darkness for night) to help them progressively.
Ready for the rest of the adventure?
Next month, your baby will start discovering their hands and babbling with even more enthusiasm.
See stage 2 - 3 months