We are living through a difficult time, everything uncertain, old habits and assumptions being broken, but you are clearly an intelligent and capable woman so will understand that last year's expectations cannot apply to this year. Recorded lectures may not have quite the buzz of the live version, you will not be able to spend lots of time talking things through with individual students. It will, simply, not be the same. Everyone is in the same boat and most are worried about some aspect of it all (not necessarily the disease itself).
I do wonder if you have ever looked at / considered / tried a low carb diet? I certainly found that it helped make me a happier person, it also has a reputation for lowering blood pressure, giving people more energy and sorting out gastric issues. Perhaps you are feeling that you have lost control in your life, diet is something you can control and, I know from personal experience, one where you can and do see results. Lots of information on this site and elsewhere.
I hope you can sort yourself out, I expect you are a valued member of your university community, don't let yourself "drown".
Sally