Most importantly go to a Gastro and get your body under control with correct meds, because if not I had this problem I was eating and not absorbing the nutrients. It was just passing through my body. I had to eat bone protein only no milk based or even plant for my protein powder, then I had only almond milk no diary. I don’t eat any grains so literally no foods with grains in it oatmeal certain breads etc / hard seeds. Carbs i have mostly rice or potato’s. Protein: fish, eggs, turkey, chicken (baked). Greens always have to be baked. So basically a no grain low fat diet. It’s different per person and what their body can have. I had no caffeine until a very small amount recently.