I went through the process with the help of two sessions with the Mayo dietician. It is a meticulous process with big payoffs. Some have tried to do it on their own but I don’t recommend that. For me it’s a lifelong diet, with very few changes from the DASH/ Mediterranean diet we are on. There are two foods I have omitted for most of the time, with eating small portions if invited out for a meal. There are other foods that I use in small portions when cooking at home. Really the changes for me were not dramatic but a friend went through the same process at Mayo and she absolutely cannot eat any garlic. This is hard for her at restaurants. I have tried many things in my lifetime to solve my gastro problems. Nothing helped until FODMAP came along. My suggestion is to be patient, find a dietician trained in this, and enlist family and friends to be helpful during your time of discernment of what you can eat.