My baby boy is 5 1/2 months old and has only gained 10 ounces in 3 1/2 months. He went from the 50% in weight to not being on the charts anymore. He has been on prevacid and zantac for almost three weeks. His wet and poopy diapers are ok, but not great. His wet diapers were really bad before his 4 month check up. My period returned around 4 1/2 months. Almost every nursing is a struggle with him fighting me. We cosleep, I wear him, he's with me all the time and I feed whenever he wants. I take Fenugreek 3 times a day, eat oatmeal for breakfast. We have seen a Pediatric GI and will have a follow up next Tuesday, but I don't know if I can do it anymore. I hate not knowing if he's hungry, tired or in pain. I'm not even sure if we were to start supplementing with formula how we would go about it? How much do you give after each feeding? I pump about 3 ounces every night but I'm not sure what to even do with that. He refuses solids. What do you do when your baby is no longer the happy healthy baby he used to be? How do you know?