@mattwilcox (I am not in care work, but am related to a bunch of nurses so I hear chatter): look at the starting salaries (usually hourly rates) for the "lower skilled" jobs and see if you could live on that first. The job that often requires no formal training but can be the most grueling is "home health aid" (my uncle's wife is a former one of these, it can be rough on the body and mind), but the pay is abysmal and thanks to the format of the work if you have a client you don't get along with it can be wretched. I think the similar job in a hospital is "patient transport", but I'm not 100% certain about that.
If you can swing a little formal training by taking night classes (or short courses, see your local community college or trade school in the US) you have options like certified nursing assistant nursing assistant (CNA), medical assistant (MA), phlebotomist, or even EMT (there are often crash courses for this training that are 4-6 weeks during the day or only at nights for a full semester, they expect many people have full time jobs already and are looking at EMT as a change in career).
If you have the time you can take a full year (I think some of the courses are compacted into that) and get something like a registered nurse (RN) degree, which opens a lot more doors in terms of being able to work in places like doctors offices and dialysis centers that won't need you as the newest person to work the worst overnight shifts all the time because they aren't open at 3AM.
Good luck!
