Oh yes, this is a very common symptom -- I've been there, my friend! In the FB forum, people celebrate the day they can put clean sheets on their bed, or simply sweep or vacuum a room or two...

Many people have had good results with hyperbaric oxygen treatment. This is the sort of thing you have to pay out of pocket for and it can be costly. In my area, there's a place where you can buy one session at a time (not necessarily a pack of 10 etc). That way, you can see how well it works for you.

If funds are limited, the one thing that can help ALL long-haul symptoms for very little cost is taking B-3 (high quality, single supplement, niacinamide form, 500mg, 2-3x per day). Niacinamide is the pre-cursor for your body to make more NAD, and NAD is absolutely necessary for all bodily functions/systems. All the best to you! It DOES get better. And in the meantime, don't over-exert yourself by trying to exercise etc.