Newborn Development Guide: 0-2 Month Baby Milestones

Published: 2026-01-15Last Reviewed: 2026-01-15BebeSnap Parenting Team3min read

Is my newborn growing well? The newborn stage is a time of rapid daily growth. From the Moro reflex at 1 month to social smiles and cooing at 2 months, here's your complete guide to 0-2 month baby development milestones.

Newborn Development Characteristics

The newborn period (0-2 months) is the fastest-growing phase. During this time, babies:

  • Gain 20-40g daily
  • Grow 2.5-3.8cm per month
  • Rapidly develop all five senses
  • Begin transitioning from reflexive to intentional movements
Every baby develops at their own pace. Milestones reflect what 75%+ of babies do at each age, so use them as a general guide.

1-Month Development

Physical Growth

  • Weight gain of 500-700g from birth
  • Height increase of about 2.5-3.8cm
  • Head circumference increase of 1.5-2cm
  • Hands stay in fists

Motor Development

  • Briefly lifts head when on tummy (about 45 degrees)
  • Cannot fully support head yet
  • Moves arms and legs irregularly
  • Starts bringing fingers to mouth

Sensory Development

Vision:

  • Focuses on objects 15-30cm away
  • Gazes at parents' faces
  • Prefers high-contrast black and white patterns

Hearing:

  • Startles at loud sounds
  • Responds to mother's voice
  • Tries to turn toward sounds

Reflexes

One-month-olds show several primitive reflexes:

  • Moro reflex: Arms spread and retract when startled
  • Sucking reflex: Sucks on anything touching mouth
  • Grasp reflex: Grips objects placed in palm
  • Stepping reflex: Makes walking motions when feet touch surface
  • Rooting reflex: Turns toward touch on cheek

Language Development

  • Communicates through crying
  • Different cries for hunger, tiredness, discomfort
  • No cooing yet

2-Month Development

Physical Growth

  • Average weight gain of 30-40g daily
  • Clenched hands begin opening
  • Getting chubbier
  • Neck muscles strengthening

Motor Development

  • Holds head up longer during tummy time
  • Can turn head side to side
  • More active arm and leg movements
  • Kicks vigorously

Sensory Development

Vision:

  • Sees objects clearly within 30cm
  • Tracks moving objects 180 degrees
  • Shows interest in bright colors

Hearing:

  • Distinguishes parents' voices
  • Turns toward sound sources
  • Calmed by soft sounds

Language Development

  • Cooing begins: "aah", "ooh" vowel sounds
  • Makes sounds when happy
  • Tries to respond when talked to

Social Development

  • Social smile emerges: smiles at faces
  • Makes eye contact
  • Shows interest in people
  • Begins self-soothing by sucking hands

How to Support Development

0-1 Month

  • Tummy time: 2-3 times daily, 1-2 minutes each
  • Black & white mobiles: High-contrast visual stimulation
  • Physical contact: Cuddle and stroke baby
  • Talking: Speak softly and often

1-2 Months

  • More tummy time: 3-4 times daily, 3-5 minutes each
  • Eye contact: Make eye contact at 30cm distance
  • Singing: Lullabies and nursery rhymes
  • Hand holding: Utilize grasp reflex

When to Consult a Doctor

AgeWarning Signs
1 monthDifficulty feeding, no response to sounds, no reaction to bright lights
2 monthsNo smiling at faces, no response to sounds, doesn't bring hands to mouth

If you suspect developmental delays, early consultation is best. Early intervention is most effective.

Track Development with BebeSnap

  • Growth tracking: Monitor height and weight changes
  • Milestone records: Log first smile, cooing start date
  • Photos/Notes: Save precious moments
  • AI Chatbot: Get answers to development questions

References

Newborn Development Guide: 0-2 Month Baby Milestones

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