my son is one year old baby boy still i give my milk and i was stop formula milk today and today itself i give cows milks and it is ok or not give cows milk

A. Don’t instantly stop formula continue with it and give one portion of cows milk by adding 20 or 30% of water and see how well is your child accepting a lot of kids face constipation lose motion vomiting after having animal so just don’t immediately stop milk first do a test by giving a little amount of milk to the child