First of all, you must eat something at night, because you can't eat too much in less than three hours from eating to sleeping. I suggest you eat fruit or vegetable salad. If you are still hungry, you can try simple western food or Chinese food, or soup to see your taste. It is recommended to do exercise before going to bed, and sit-ups and sit-ups are more suitable. Because I don't know how much work you do every day, I can give these suggestions from the information you give for the time being.