Grinding your hair against a cotton pillowcase for eight hours is the fastest...

https://juliet-wiki.win/index.php/Silk_Bonnet_World_Review:_Are_They_Actually_Worth_the_Late-Night_Hassle%3F

Grinding your hair against a cotton pillowcase for eight hours is the fastest way to wake up with a total bird-nest. That constant friction causes breakage and frizz. Switching to silk or a loose scrunchie is an easy, low-effort way to save your ends.