Don't do it.
Personally, I think the colleges have been pulling a scam, hyping non-existent "opportunities". It isn't just NM, but law, nursing, etc. My wife is an RN & does well, but she got into it yrs ago & has acquired the experience needed to make it now. Her current position is probably one she'll stay with for good (barring winning the lottery, which we don't play). As with aviation & law, the halcyon days of medicine are at an end. Money is tight, getting tighter. Paycheck-to-paycheck is better than no pay. If you can survive, then stick with what you have for the moment Be willing to compromise (at least for a while) in this climate, perhaps sticking with your status quo for the moment for survival. At the very least, absolutely DO NOT go into nuclear medicine. Nursing is a broader field, but I also hear that it's pretty bad there, too. Medicine probably isn't the place to be in general, unless you're already in & have enough time such that you might as well just stay & sick with it.
I honestly don't know what to suggest. The old stand-by was to go back to college, but that doesn't necessarily apply any more, & you can't trust them. Better to talk to people working in other professions & get it directly from them. Don't talk to college program directors. They're in it to sell their program, & it doesn't impact them negatively when you come out the other side & are unemployed & in debt - other than that they got your money, which is *really* their sole purpose anyway.
College programs speak in glowing generalities, & making vague promises of "opportunity" for your time & $$$. Don't get yourself buffalo'ed by such shenanigans. Be smart, savvy, & skeptical. Protect yourself. Again, talk only to people *working* in their fields - not "teaching" in them. If you confront program directors with negative facts, some (many?) may try to downplay them.