My little one is 5 months. Till now he was on bf and formula milk but since 15 days my inlaws have started giving him cow milk. I'm we have our own personal cow and we don't feed the cow any artificial food. It eats only pure food. So it is assumed that the milk is also pure. My MIL adds milk and water in ratio 1:1 and adds little bit of taal mishri to it and boil the milk. Baby drinks the milk very fondly and it's been 10-15 days we have been doing it. How do i know that he is not able to digest the milk???