Yehudah Tzvi ben Elisheva,
SOOOOOOOOOO glad you are having a friend over. No more isolation for you, d’ya hear???
In fact, it might also be a good idea to call your rav to see if you can put tfillin on your right hand temporarily; there are poskim who hold like this in your type of situation.
And now you’ll have your rav on board as well!
Please just accept that your energy is on a temporary hiatus and will return shortly. Things usually move more smoothly when you accept it without fighting it, since fighting it in itself takes more energy.
You can even ask Hashem to help you accept this ????? and to be as positive as humanly possible. Easier said than done.
Refua shlaima once again!