D.M.
Okay, don't worry my son at that age was breast/bottle fed because he was in the NICU and I remember them giving him 2 oz. every 2 hours. I would pump, and they would give him tiny little bottles. When I breastfed it was until he was done, so it varies really. I think it wasn't until he was 2 months old that we were instructed to fill a bottle with milk 4 oz., and see how much he would feed. And, every 2 months it was add 2 oz. By the time he was four months old he was feeding every 3 hours, and taking 4 oz.
It sounds like your doctor is not the best help, and you might want to consider getting new Pediatrician...you can't give a baby acid reflux...it's something you develop as a result of your system. My sister and Dad both have it, and it's a biological thing.
Good Luck!!