My question is what would you do if you were in my shoes.
Take a deep breath? Seriously, this is not sustainable. It's been 20 years since I've done the three job routine, it made me sick, literally. Here's what I found - it's a lot easier to work very hard and long hours at one, single job than it is to shift gears like you're doing. So find a single gig that will pay you enough to have your own place, even if you have to lower your expectations as to what that means. Don't put yourself in a position where the roof over your head is dependent on the madness of multiple jobs.