You will need to strictly stick to a low fat diet. Eat only bland foods.
I am doing this right now to try to avoid surgery. Chicken, fish, turkey, vegetables, fruit, whole grains only, limited diary and eggs. Nothing processed, no gluten, nothing smoked. Basically, I cook everything I eat, or order a grilled chicken salad at restaurants. I limit butter or oil when cooking. I find steel cut oats to be very good for a filling breakfast. It does work, and you'll also feel better generally and drop some weight if you have a few pounds to lose.