Hi there! I used to have the same problem with my girl, that she could only drink when she was asleep n sometimes she could just go without milk for max 12hrs! :( So I went to pd n he said that so long as baby is growing (and sticking to the growth curve), it’s fine! But cos I was still very worried so the pd gave me the following supplement to help boost baby’s appetite! I didn’t add any oatmeal cereal to her milk though! My baby had this issue from 9weeks old, and thankfully she kinda outgrew it at 10months. Took Super long but at least it had passed! Hope your baby’s issue will go away way faster than it took for my girl! Sending you lots of hugs because I know how worrying it is! ❤️