Yes, that’s why I said to stop at 9:30 and that your school hours are insane. Did you check the links ?
You have to be asleep at 10, but 8 is indeed impossible both from a practical standpoint and from a physiological one. Even to fall asleep at 10 you’ll probably need the help of over the counter melatonin. (no secondary effects, not a sleeping pill. Teenagers ’ melatonin levels change later than adults ’ so taking melatonin at 8-9pm makes it easier to fall asleep at 10 or so by compensating for these levels.)
Are you allowed to take a day now and just sleep? You’ll feel better. Would your parents let you rest for a day if you tell them you’re feeling unwell?
What classes are you taking, what classes do you plan on taking next year, and what universities are you aiming for ?