Sleep Apnea Treatment

My mind won’t let me rest. Seconds after closing my eyes I have to open them again due to the revolution of thoughts in my head… and when I’m finally exhausted enough to able to sleep, I dream… I dream all the time, thus waking up feeling like I didn’t rest at all.
I’m down to 4-6 hours to sleep daily, and less than 2 hours on the worst nights. I tried sleeping days, but I get just as much or even less rest.
I never slept much to begin with, being a light sleeper and having a tendency to sleep days and haunt at nights, but my resistance is giving in, my body is giving up.
I’ve been awake for nearly 48 hours now… I’ll try anything as long as it has nothing to do with pills or drugs.
Is there a safe natural way to relax enough to be able to rest? A way to suppress my dreams?

how to concentrate in studies i got exams ((((((((((( plzzzzzz tell i just cant sleep or cant study just thinking depresed thank you