Tutoring is a goldmine. I usually made about $500/wk during M1/M2 but there were plenty of weeks where I was making much more than this, especially now due to COVID. Granted, I have years of tutoring experience and a marketable MCAT score (also tutored SAT/ACT/GRE). Tutoring alone allows me to cover all my living expenses while also making decent-sized payments on the private student loans I acquired during undergrad + grad.
I also have a work-study job since the funds are available, it pays substantially less than tutoring but it's essentially free money given the job requirements. If you qualify for work-study, use it. There are always plenty that exists that just have you sitting behind a desk for 'x' hours, time you essentially get paid to study. Funds not used for work-study can be taken out as Direct PLUS loans, but it isn't worth the interest rate.