Ah. So she's probably your rep payee then, I'll assume.

Unfortunately I'd side with the others here and suggest that you find another line of work, maybe keep filmmaking, scriptwriting, and selling art as side jobs/hobbies. I've been looking for WFH jobs on Indeed for a while, so you could start there if you don't want to stand on your feet all day. There's also the Maine CareerCenter that has lots of helpful resources.

If your mother is receiving your checks and is putting every cent of it towards rent, then it wouldn't hurt for you to take on another job or two if you're able to, so you can have income for yourself if you're buying your own necessities or would just like a cushion to fall back on if needed.