6 week old with severe acid reflux...don't know what else to do!?

Okay so my daughter has been miserable the passed 2 weeks with her reflux. It makes her throat hurt so bad that she has begun to refuse her bottles and it takes a long time to get her to eat anything. She was put on Nutramigen formula when she was almost 4 weeks old and I think it is only contributing since it is so thin. When I took her to the doctor at the beginning of the week she said to start putting rice cereal in her bottle. Very very little, only a half teaspoon per ounce. I was very hesitant to do this because I know you aren't supposed to unless the benefits outweigh the risks. Well the poor little thing can't even sleep. I can rock her to sleep and she will wake up screaming 10 minutes later when it comes up in her throat. So, I have been doing the rice cereal in her bottle on top of working on trying to breastfeed. I give her expressed breast milk in a bottle about twice a day now. I don't know if this is right....but it seems like the breast milk is making it worse! Which is strange because it is supposed to make it better. Neither of us have gotten any sleep in the passed week and I just don't know what else I could possibly do for her. She is on Zantac already and they even upped her dose because it wasn't helping. I feel so sorry for her because I know she is very tired. Yesterday the doctor told me to skip a few feeds and give her pedialyte in her bottle, an ounce every hour, but that just felt like I was torturing the poor thing! She was screaming her poor head off and rooting like crazy. I just don't know what else to do. She is eating 4 ounces every 4 hours or more. That doesn't sound right to me with the rice cereal in it, it should be less right? I tried to give her only 2 ounces and wait 2 hours but she screamed and screamed until I gave her 2 more and then she was fine. I feed her upright and keep her upright all the time. I change her diaper on her side already so she isn't flat on her back. Are there any other tricks I am missing? I am so tired and hardly have any help! My poor husband has been staying up for 2 hours after he gets off work, (he works nights) so that I can take a nap but that is only 2 hours and she is crying the entire time and I can't sleep when she is crying. I need some suggestions please if you can think of anything at all!