How can I cheat my meal plan?

I'm in hospital for anorexia and I need to know how to cheat my meal plan? If we don't eat it gets given to us through a tube. If we refuse that they hold me down physically. Breakfast is two pieces of toast with milk and cordial, the toast has peanut butter. Morning tea is more toast and PB with milk. Lunch is toasted cheese and tomato sandwich. With milk and cordial. Arvo tea is more toast and PB or ritz crackers and margarine. Dinner is whatever it could be pasta shepards pie etc. Supper is more toast and PB. Please, how can I cheat the plan? Also I can't throw up. Or exercise as we have an hour of bedrest after each one. Help!