I sleep with my hair in a plop. A lot of people find it uncomfortable or it falls off. An alternative is to shower not too late, let your hair dry mostly, and let the gel cast form and stay intact. Loosely pineapple overnight.
I don't have time to shower in the morning what should I do for my hair to stay curly overnight
Loose pineapple and satin pillowcase might help. But I'll tell ya... I NEVER can get really good hair sleeping on it over night.
Sleep with a silk cap