How do I rid of procrastination and increase the amount of hours of sleep I recieve each night?

I’m a highschool student who gets good grades in school, but struggles in the process. I suffer from really bad procrastination and started to become lazier and lazier. In result, I now stay up very late getting assignments done, in which I find both unpleasant and displeasing. I know I could be called dumb for procrastinating, when I know that it doesn’t make me happy. If anyone has some tips, pointers, or anything helpful/work related in highschool, please help me out!