Cow milk contains high protein, and can be in tolerable to tinu gut and digestion system. Breastmilk is best. Otherwise, choose a formula milk that's closest to bm, that contains Prebiotics. Like my doctor had suggested me Aptamil. You can discuss with your paediatrician about the same.

Hello Monica, No cow milk should not be given before 1 year, the protein in cow milk cannot be digested by babies. It leads to severe gut issues or allergy. Try breastfeeding her in lying down position