AS bad as you say it is, you should be pushing for Hyperbaric Oxygen therapy.
It works well, but you have to find a place that has the chamber. The Navy has used it for something like 80 years.
Yeah, one of the VA docs suggested that awhile back and was going to look into it. They don’t provide it at the VA but thought our local community hospital might. He never brought it up again. I may have to suggest it to my new doc.