I am sorry your situation is so difficult right now.
When I need to be flat out on the sofa or bed, there are a few things I try to do. I play favorite movies or tv shows on my iPad on the nightstand. I don’t watch them because that would mean lying on my side which makes the symptoms worse and trying to track the changing scenes (the color & movement) would also worsen the symptoms. But, listening helps distract me.
I also try to read at times. Losing the ability to just sit down and read was the most difficult adjustment for me. (Still is a sore point.) But, after reading an article written by a man who lost his balance after gentomycin treatments, I tried his idea. It takes a few pillows. I prop my head & neck very well so I don’t slide down or move to either side (this is at a low slant - I’m not lying totally flat or sitting up) and then I place pillows across my abdomen and to the sides. I prop the book on the abdomen pillow so that it stays steady. I have a clip-on light on the bed’s headboard that shines directly on the page. If the words are too jumpy I use a handheld magnifying glass to help counteract that.
All that said, this is still an exhausting activity. I can read for up to 20 minutes at a time like this, then rest for 40 or 60 or whatever is needed. On the surface it can seem like it isn’t worth the effort. The first few times I tried it I gave up out of frustration. But, I have found that it works for me and being able to read, even for just 20 minutes and even if that 20 minutes requires a short nap, well, I’m reading again! Those intermittent 20 minutes of reading give me enjoyment at reading again and also, I get slivers of hope that with practice I’ll be able to read more.
(I also use the same method for reading when sitting up. It’s a lot easier to perch the book on several pillows than tip my head down to look at the book.)
I also meditate a bit (the body scan approach), stretch if possible (very gentle yoga moves while lying down) and if all else fails, I sleep. The brain needs a lot of energy to deal with this condition. Sleep helps.
I wish you well.