First-year guide › 5 months

Your baby at 5 months: what to know and when

These are the tips Coo starts showing parents at about five months. Many of them stay in the app for months after that.

Health

Know the signs of a serious food reaction

A reaction to a new food usually shows within minutes, or up to 2 hours, though a few take days. A rash, vomiting or diarrhea on its own means stop that food and call your pediatrician. Trouble breathing or a swollen tongue or throat is an emergency: get help right away.

The 6-month checkup covers a lot

Around 6 months there's usually a checkup, where baby may get vaccines. It tends to cover a lot, like sitting, starting solids and first teeth, so jotting questions down beforehand helps.

Your doctor or pediatrician can tell you what to expect at this visit.

Growth & play

Solids

Peanut and egg can come early now

Current guidance has shifted: health organizations now generally suggest offering common allergens like peanut and egg early, once baby has started solids, rather than waiting. Keeping them in the menu regularly seems to matter too.

If baby has severe eczema or a known food allergy, check with your doctor or pediatrician first.

Some foods are easy to choke on

As solids begin, hold off on whole grapes, nuts, popcorn, chunks of meat or cheese, hard raw vegetables, and spoonfuls or chunks of nut butter (thinned with breast milk or formula is fine). Offer soft foods, and keep baby sitting up with you watching at every meal.

Honey can wait until after 1

As new foods come in, one easy one to skip for now is honey, including honey in baked goods or on a pacifier. Health organizations recommend waiting until after the first birthday because of a rare but serious illness called infant botulism.

Sources

Checked against sources Oct 12, 2026

Care

In the Coo app, these tips appear in Explore, timed to your baby’s age.

Download on the App Store