hello , my baby is 4 month old i m giving formula milk ( nanpro) when i can change milk from formula to other milk

A. Hello good afternoon !! Exclusive breastmilk or formula milk is suggested untill 5 completed months. From 6 month onwards start semi solids along with formula milk or breast milk untill one year. One year+ onwards you can introduce other milk cow, buffalo or packet milk because one year below babies can't digest animals milk.