sir/mam I am a mother of diyashini she wae 4 month old baby how to maintain and teach please tell tips

A. hi dear Movement/Physical Development Holds head steady, unsupported. Pushes down on legs when feet are on a hard surface. May be able to roll over from tummy to back. Can hold a toy and shake it and swing at dangling toys. Brings hands to mouth. video icon. ... When lying on stomach, pushes up to elbows.