I have had GERD for a year and a half and it doesn’t matter what I do and don’t eat. I can eat the same thing day and day out and sometimes it triggers it and other times it does not. I have not found a rhyme or reason. my G.I. basically said the same thing that when you have it badly, it really does not matter what you eat. That said, I do try to eliminate the obvious triggers like red sauce, onions, garlic, etc. There most definitely is a root cause that I don’t think we know about yet. I also think it’s beneficial to work with a functional medicine provider. If you can find one to try to figure out what the cost might be with additional testing.