Some tricks to sleep faster

Idk, for some reason I'm having trouble sleeping like, back then like 9th grade and 10th grade I always get sleep paralysis and stuff but I can sleep early. But rn, my summer is about to end and my sleeping schedule became shit, idk what happened, I used to sleep in afternoon and sleep early in nights, so I'm confused like. I cannot sleep in afternoon and also night, I start sleeping in around 3am, am I going crazy cuz one time finally sleep around 9pm and woke up at exactly 3am, I was confused but I kept hearing voices like, someone or something is like "pst pst" I got scared but decided to uhm "pst pst" back, ohh wait, this wasn't actually one time. It happened way back almost before my 8th grade ended and then my sleep paralysis starts anyways DO YOU GUYS HAVE SOME TRICKS TO SLEEP FASTER OR METHODS BECAUSE IM LOSING SLEEP AND MY SCHOOL IS STARTING ON MONDAY