Reflux

I need some help with my sons reflux, my ped is not really helping at all. At first they said it’s normal, but I don’t think it’s normal when he is soaking up 4 bibs after feeding. I feed him upright, and keep him upright for 30 mins or sometimes longer, I burb him all the time. I called the ped again and said that I need to feed him only 3-4 oz instead of 5-6. I tried that and he is PISSED and cries when I don’t have more in the bottle. He’s a growing hungry boy. I’m not sure what to do 😩