What is the best way to keep your curly hair curly when you sleep?
Search on NC for info about pineappling... it's a method for putting your hair up at night to reduce bed head. Also, sleep on a satin pillowcase... it's gentler on your curls than cotton.
I use the plopping method, wrapping my hair in a t-shirt after I've scrunched my products in (a leave-in and a gel). I sleep with it wrapped up and take it down in the morning. My waves and curls are preserved really nicely. Good luck!