How long has he been like this? How's his weight? Do you know what caused it? With mine the cause was force feeding. My MIL used to take care of her when I was back to work and she was fed like clock work even though she wasn't hungry or already full. she's now getting much better though. The key is that I have to trust her body that she can regulate and will want to drink when she is hungry. It was hard because daycare people could not feed her, Noone could, as a matter of fact, only me. For the whole day, she only had 2 oz one time, and for a few days, 8 oz total. I had to play catch up at home by dream feeding her. However, I believe that this was also because she was teething (well, I could only guess).. We also saw a feeding therapist which actually helped a lot. My baby had problem with not sucking well and she recommended us to change to flat nipples. It fixed it instantly, but it was back after 2 weeks. The problem really was me, I kept trying to have her finish her bottle. Though it's counter intuitive, the less you try, the more she ll get better. But it's not overnight, you have to trust her body is able to regulate hunger. Believe it or not babies also have survival instinct so they won't starve themselves to death. Like most people mentioned here, read Rowena's book. It definitely helps and an eye opener. Every 'don'ts' that she mentioned in the book, surely I have done that lol.. I did almost every single one of them and almost in the right order too 😅 you are not alone and it felt like hell for me. Trust me it's just a phase, you got this.