I am so sorry, that you have to fight with health problems which have consequences for your motor skills in your hands. I am not sure what to wish you, so that I do not write something hurtful. If it is possible that your dexterity will get better again? Can crafting help? For me knitting socks is also tough and I only have minor arthritis problems, so I can imagine that crochet is much more comfortable for you right now. I think the combination of thin needles and knitting such a small circumference somehow makes sock knitting exhausting /hurtful for some of us.
Sending you a big hug