I think you can start cow's milk as an ingredient sure. Signs of allergy - vomiting, loose stools, rashes following milk intake. Its highly unlikely that she would be allergic to it if she's able to take cheese, curds without any trouble. Also she is not a generally allergy-prone baby is she? Do you have milk allergy in the family? As a matter of curiosity why is your pedi witholding egg yolk until 1? Vanathi.