Get an Atkins diet book. Anything on the induction diet should give you ideas. New food, have a little and see how it goes.
The idea is high protein and low carb. Right now your stomach is tiny so you should be eating about 90% protein with maybe a bite or 2 of something else. Make up some chicken/tuna/egg/ham salad. Soft and goes down easy. Have a bite or 2 every time you pass the fridge. Spread some deli meat with cream cheese. Roll and eat!
Your stomach is probably too small for real meals at this point and that's OK.
Insulin does make you feel like you starving. It also helps you to store more fat. Plan to eat a lot of things like turkey breast. Roast a turkey breast, slice it, and keep in the refrigerator. It also helps to eat a lot of fish, chicken, eggs, beef, pork, beans and lentils. Avoid cereal, bread, pasta, sweets, anything made with flour or sugar. It is not easy, but it is doable. Eat a lot of non-starchy vegetables, and limit fruit. I belong to Weigh****chers and find their points system very helpful. Since you are DS and don't absorb fat, you can eat whole fat cheeses and meats and that will help you to feel fuller. Exercise will help more than you think.
Real life begins where your comfort zone ends