Dunno your specific situation, if working from dawn to late at night is a common occurrence for you, if you need these works even as long as they are, and so on, but maybe consider getting another work, or even leaving some of those 3~4 jobs? You would need to struggle through exhaustion too to go after other opportunities, but still.

And worth noting, work may still be rewarding past the monetary gain, but a balance is required for the remedy to not become a poison. And as exhaustion piles up, one's life starts going down, such as getting sick more often, getting more easily irritated, getting more apathetic, etc., and it only gets worse.