Struggling with Neuropathy of My Colon

Struggling for the post 18 months with neuropathy of my colon/digestive track and can’t keep any food inside of me, it messes up my day to day life tremendously. I have to eat/not eat according to my plans for the day and working on top of that I’m lucky if I get one small meal a day. I have pills that slow down the digestion process, but they’re becoming little to no help. I’ve been so sad about it since the problem started. I was getting better for a while. But now that I finally have a job I’m becoming so tired of being a walking science experiment. I’m so exhausted. Any tips/advice on what to eat?? Light yet filling foods? Foods that are full of nutritional value? I need any help I can get. Nobody understands how hard it is to function all day with no food for fuel. 😪