5-Month-Old Baby Guide: Sleep, Feeding, Development & Weaning Readiness

What may emerge before 6 months?

Tummy-to-back rolling, pushing up on straight arms, leaning on hands while sitting, reaching for a toy, bringing objects to the mouth, laughing and making sounds back may appear as six months approaches. The CDC classifies them as skills most babies do by six months, not as requirements at five months.

WHO’s windows are wide: independent sitting spans 3.8–9.2 months, assisted standing 4.8–11.4 months and hands-and-knees crawling 5.2–13.5 months. Not sitting or crawling now is therefore expected for many healthy babies.

Is there a 5-month NHS review or vaccination?

There is no separate universal five-month review or routine national vaccination appointment after the 16-week jabs. The 2026 Healthy Child Programme allows a targeted assessment around six months for families who need it, covering feeding, sleep, oral health, growth and development. Follow any local health-visiting plan and keep the Red Book current.

Nerumi stores appointments and questions and turns chosen sleep, feeds, nappies, medicines, growth and notes into a clear PDF for your health visitor or GP.

How much sleep—and is there a 5-month regression?

The broad reference is 12–16 total hours in 24 hours, including naps. NHS guidance does not set one five-month nap count or an exact wake window. Some babies aged three to six months sleep a longer first block at night; many still wake to feed.

There is no nationally defined five-month regression or leap with a fixed timetable. Real changes can follow rolling practice, longer alert periods and stronger curiosity. Nerumi turns your baby’s own sleep history into personal wake patterns and next-sleep estimates. Seeing feeds and nappies beside sleep helps distinguish a changing routine from discomfort or illness.

Does waking more mean it is time to wean?

No. NHS guidance says more night waking or chewing fists alone does not show readiness, and starting solids does not make a baby more likely to sleep through. Begin from around six months when three signs come together: staying upright with a steady head, coordinating eyes, hands and mouth, and swallowing food rather than pushing it out. Milk remains the main food now.

Nerumi keeps breastfeeding, bottles, expressing and stored milk together, making the whole feeding pattern visible rather than one unsettled feed.

Movement, safe play and growth

Offer supervised floor play and easy-to-hold toys that are too large to choke on. Rolling may arrive suddenly, so never leave your baby alone on a bed, sofa or changing surface. Independent sitting and crawling are not required yet.

Roughly doubling birth weight around 4–6 months is a common observation, not a five-month test. Nerumi places weight, length and head circumference on WHO percentile charts so the next professional sees the direction over time.

When should you contact the NHS?

Speak to your health visitor or GP about persistently weak head control after four months, marked asymmetry, unusually floppy or stiff muscles, or loss of a skill. Not yet rolling, sitting independently or crawling at five months is not by itself a red flag.

Call 999 for severe breathing difficulty, blue or grey colour around the lips or face, a seizure, unusual difficulty waking or inability to feed. Use NHS 111 when you need urgent advice and are unsure.

Vaccinations

United Kingdom

This schedule is for reference. Which vaccine your child needs and when is your doctor's call.

Schedule: UK Health Security Agency · GB-UKHSA-2026-01 · reviewed 2026-08-09