Consider moving closer to the first job, dropping the car, and dropping the other two jobs. Dropping the car saves you (national average) $10K/year. This also brings you closer to many of the tax write-offs long term. If you *must* work a second job, look for one near the first job, but do it for only a brief period of time.
If you burnout on your profession, the debt and degree become simply a sheet of paper. Working three jobs does not allow you time for self-care (very important in health-care fields).