If you have trouble sleeping after stopping, here is a small bit of advice.

I know, it is childish, it reminds you of what your mama used to do, or maybe you even do it with your child, but regardless, my bit of advice for sleeping is...

Warm Milk with honey.

Look, you ain't gonna be looking very adult when you drink it, but no one can deny the effectiveness and also, maybe part of being a full grown adult in the year 2025 is to not care what you are supposed to be like.

So the tl:dr:

If you can't sleep, hot milk with a teaspoon of honey, calms the nerves. Tastes good. Makes you sleep nicely.