I need help to sleep

So I'll make it simple, in the last 2 weeks I had sleep paralysis 3 times, each time I woke up in the middle of the night unable to move hearing scary noises and seeing tones of shadows appearing and disappearing, every time is different but same theme. I'm 14 years old and I have school, 2 out of school programs for chemistry and geology and I have 1st aid training, all of that make me come back home late and I have 4 days of coming home at 9pm and the others I have nothing. I really just can't fall asleep, I'm frightened it will happen again and even if I'm not afraid I just can't fall asleep. I get combines around 20 hours of sleep these whole 2 weeks and I'm like a zombie. Any of you got advice to help?