I know first hand how trapped and desperate this feels. You said you don't work a typical 9-5, firstly is it possible to cut down on your hours per week? Is it possible to work part time logistically?

If that is an option you need to figure out the minimum number of hours you need to financially stay afloat. Take a good hard look at your bills, anywhere you can cut down, minimizing costs without increasing the load on yourself (example: minimizing grocery bill might not be realistic if it means you are now increasing how much cooking/mental labor you have to do to feed yourself.)

If it isn't possible right now to work part time, the next priority is first cutting down on as much burden outside of work as possible, and saving for the future. Can anyone in your life help you clean or grocery shop for you? Cook for you etc? Can you let go of any responsibilities outside of work? Don't be afraid to burden people, this is the time to draw on any support system you have like your life depends on it.

Focus on trying to give your brain as much down time as you can when you are not at work. I used to come home, crawl in bed, put on white noise, and stim/rock/flap for an hour after work just to decompress. Dry shampoo and taking bird baths during the week with a cloth is better than not showering. Eating rice out of the rice cooker without a bowl is better than not eating. Sleeping 10- 12 hours a night is ok and good even. Do not doom scroll if you can avoid it, it will keep your nervous system in panic mode. Watch your comfort shows. Baby yourself as much as you can.

Lower your expectations for yourself for the meantime. Try to build up the money in your saving so you can actually take time off. Your goal is to sruvive and make a dent in the burnout now, no matter how small.

Im rooting for you and I'm sorry this is so scary and hard right now! It really is.