Can't sleep.

Sorry you are having trouble sleeping, I have raging insomnia and often get no more than 4 restless hours so I can sympathise. I guess it could be stress I do that triggers mine. Luckily since being diagnosed T2 and changing my diet my sleep has improved a bit.
Sorry I can't be of more help.

Generally I need a snack before bed to sleep like a spoonful of almond or peanut butter. I don't like to have to eat before bed but I like to sleep more

As an experienced insomniac I've developed strategies that works for me.

First thing is stop thinking. This can be done in a number of ways. My two favourites are counting backwards from 99 and reciting rhymes in my head, nursery rhymes and such.

Sometimes I pretend to be on a ship or a night train, going somewhere.

Second thing is to start breathing as if you actually were asleep. If I've managed to relax and stop thinking the breathing thing works like a charm.