Give prebiotics rich diet . You can try Aptamil as it contains prebiotics

Give prebiotics rich diet to the baby for imrpving the immunity in babies.

Give a good formula milk that is rich in prebiotics. Prebiotics helps in boosting thr immunity of the body.

Prebiotics are essential nutrients present in mother's milk that help to build up strong immunity for a baby. So choose prebiotics rich FM for baby.

Give him prebiotic rich formula milk because it is good for babys gut health and immunity too.