The more hydrated your hair is the more likely you are to get 2nd day hair. It took me 8 months. My advice would be not to fight for it. Just find a good moisture/conditioning/leave-in regimen and work it.
My blog -

Playing with my hair is a hobby. Fluffy, fine natural 4a. Goal= Healthy, beautiful hair that retains its length.
Hear that crash? It's me falling off the CG wagon.