Hello, Someguy83, and welcome.

You're playing with fire treating yourself as you are. You "battery" needs charging by your getting enough sleep at night that is REM sleep. It's no wonder that you feel fatigued, depressed, (I would guess that you can hardly concentrate on classes
when you attend.)

You need to decide which you want to do: to work, attend one class on a weekend, get your rest, study for that one class. Save your money. When you have saved
enough to provide for yourself in a dorm at college and complete your work, do it
that way.

Even borrowing the money on student loans with the U.S. government will get you
a break from the routine you are living to try to attend school and work 8 hours a day.

You can break psychologically with the schedule that you have now.

Why not go in to talk to the head of the counseling department where you are a student and ask about loans; what's available through the U.S government, or
private scholarships awarded to needy students.

Take care of the finances first, then go for the education in my view.
Chances are you wouldn't need to be on any medication at all if you adjust your
living and student life in a more reasonable and workable level. You really can't do
both without sufferng as you are.

Keep well and take care of yourself first. Do that and you'll be successful no matter what.