The best trick I can suggest would be a small, fatty “meal” at bedtime (e.g. a spoonful of peanut butter). The fat signals the gut to slow down. It can also hard to get the hang of distinguishing whether you really need to get up or can safely go back to sleep. Even after almost 20 years I’m not always certain, but unless I have active pouchitis I really won’t have an accident, so the stakes aren’t all that high.