Sorry to hear you are going through a hard time. I had something similar some years. I was lucky that I could take a couple months off work but sounds like you cannot. Just sharing my experience here but definitely if/when you are able, seek professional advice.

This was what I did for a few months and help me get out of the burnout stage. 1. Ruthless priorities and expectation setting in life. I cut down to 1-2 friends that I would hang out once a week with max. I let my family know that I would be MIA for a bit. Even when I went back to work, I asked for super specific goals from my manager. I expected that I would not achieve anything major in this time period. 2. No alcohol for a while 3. I took sleeping aids to ensure I slept at the same time and woke up at the same time 4. I focused on just a small amount of meditation and low intensity exercise like walks 5. I decided on 1 guilty pleasure that I was allowed to do a couple times a week. For me, it was eating super unhealthy delicious food.