Hi Flours,
A couple of years ago I was overwhelmed by work. It was a time full of assignments and I had some responsibilities in a tiny but very busy team. I felt I could not stop to care of myself. Then I got very sick and one of the doctors suggested a treatment that would require being 3 months without working. I said no to his assistant then he came to my hospital room and yelled at me. I did the treatment. I stop working for 3 months, and nobody died. Before making the decision I was convinced I could not stop working, but I did. I am not sure, perhaps you can stop doing some stuff and take more time for yourself, perhaps looking for a different type of treatment. I am not sure, I am telling you this in case it is useful somehow.
I am sending you a big hug