One year old won't eat?

Hello all!

Lately I've been having a lot of trouble with my one year old eating any food. She still suffers from GERD and reflux and still takes Zantac and Prevacid for the conditions. This issue started around 10 1/2 months of age. She started refusing all foods, even foods that she's been eating and loving since 4 months old. She refused baby food and table food. She sees a dietitian due to poor weight gain since about 6 months old. She told us to feed her before her formula, and It would never work. She would keep refusing food until she got her bottle. I'm worried now because she will be done drinking formula, so where will she her calories now? Whole milk alone is not enough for a child. What should I do? I've tried everything. I only buy her organic foods, nothing that she wouldn't like. I've cooked her her own mini meals of table food and she won't even try it. I am also spending a lot of money on food that ends up on the floor or in the trash because she won't eat anything. Dietitian says to keep being consistent, but the only consistency is that she won't eat.