Quick answer: Two months brings one of the most rewarding milestones of early parenthood — the first genuine social smile.
Two months brings one of the most rewarding milestones of early parenthood — the first genuine social smile. After weeks of one-way care, your baby is beginning to engage with you, and the relationship shifts from caretaking to communication.
2 Months Milestones
At 2 months, developmental markers include: social smiling (responding to your face and voice with a real, sustained smile — different from the reflex smiles of the newborn period), beginning to coo and vocalize (the start of pre-language communication), holding the head up briefly at 45 degrees during tummy time, tracking a moving object through a 180-degree arc, and becoming more alert and engaged for longer periods. Hands are still mostly fisted but beginning to open occasionally. Your baby may show interest in high-contrast patterns and faces.
Sleep at This Age
Total sleep: 14–16 hours per 24 hours. Some babies begin to show slightly longer nighttime stretches (4–5 hours) by 8 weeks, though this is highly variable. Naps are still irregular and numerous (4–5 per day). The 6-week peak of crying and fussiness (colic peak) should begin to reduce. Sleep associations are beginning to form — babies increasingly fall asleep in a particular way (feeding, rocking, being held) and this isn’t a problem at 2 months.
Feeding
Breastfed: feeding patterns remain variable. Supply and demand is establishing — frequent feeding continues to be the primary supply driver. Formula-fed: approximately 4 oz (120ml) per feed, 5–6 times per 24 hours. The 2-month growth spurt (around 6 weeks) may have increased feeding demands. Your baby’s stomach capacity has grown significantly from the newborn period.
Practical Tips This Month
- The 2-month vaccines are due — prepare with paracetamol (if advised by your provider), planned skin-to-skin after, and extra feeds.
- Respond to your baby’s coos and vocalizations — ‘serve and return’ conversations build language and brain development.
- If you haven’t established a rough daily rhythm (not schedule), this is a good time to introduce a loose eat-play-sleep pattern.
- Colic typically peaks at 6 weeks and should be improving — if it’s not, discuss with your pediatrician.
- Begin reading aloud daily — board books with simple, high-contrast images are ideal.
The 2-month vaccines: what to expect
The 2-month immunisation schedule is one of the most significant health appointments of the first year. In the UK, at 8 weeks (and repeated at 12 and 16 weeks), your baby receives: 6-in-1 (diphtheria, tetanus, whooping cough, polio, Hib, hepatitis B), MenB, and oral rotavirus vaccine. At 12 weeks, PCV (pneumococcal) is added. These are given as injections to the thigh plus the oral rotavirus drops. The number of injections in one appointment can feel alarming — two or three in quick succession — but this is considered safer than spreading them out, which extends the period of vulnerability.
Side effects are expected and are a sign the immune system is responding. Normal reactions: fever (paracetamol at the appropriate dose for weight can be given), redness and swelling at the injection site, unsettled behaviour and increased crying for 24–48 hours, and drowsiness. Unusual reactions that warrant same-day medical contact: fever above 39.5°C, inconsolable crying lasting more than 3 hours, a lump at the injection site that grows after the first week, or any rash. The MenB vaccine specifically is associated with higher fever rates — the NHS recommends giving infant paracetamol after this vaccine even before fever appears.
Developmental red flags at 2 months
The 2-month review (part of the UK Healthy Child Programme) checks specific milestones. Discuss with your health visitor if your baby is not: fixing and following a face by 6 weeks, startling to loud sounds, vocalising at all (no cooing or responsive sounds), or showing any social smile by 8 weeks. A baby who is consistently not making eye contact, not responding to your voice, or not settling to your voice is worth discussing — these are not diagnoses, but they’re worth raising rather than waiting.
Frequently Asked Questions
What vaccines does my 2-month-old need?
In the US, the 2-month vaccine schedule typically includes: DTaP (diphtheria, tetanus, pertussis), IPV (polio), Hib (Haemophilus influenzae type b), PCV13 (pneumococcal), RV (rotavirus), and Hepatitis B (second dose). In the UK, the 8-week vaccines include 6-in-1 (diphtheria, tetanus, pertussis, polio, Hib, hepatitis B), PCV, rotavirus, and meningococcal B. Expect fussiness, low-grade fever, and soreness at injection sites for 24–48 hours.
Is my 2-month-old’s crying normal?
Infant crying peaks at approximately 6 weeks and typically decreases significantly by 3–4 months. If your baby’s crying has been intensifying for weeks, you’re in the normal peak period. If it’s been consistently excessive from birth without improvement, discuss with your pediatrician to rule out underlying causes (reflux, CMPA, neurological causes).
When should my 2-month-old be able to hold their head up?
By 2 months, most babies can hold their head up briefly (seconds to a minute) at a 45-degree angle during tummy time. By 4 months, head control is significantly better — 90 degrees, steadier, and more sustained. Consistent daily tummy time is the primary driver of this development.
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Related Reading
- 1 month old baby: milestones, sleep & feeding guide
- 3 month old baby: sleep regression or just a growth spurt?
- Baby talk: how to encourage speech from day one
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