I had covid in November, and I am happy to say that based on my experience, you have nothing to worry about. I had super easy covid (I only had fever for half an hour, until ibuprofen started working, and once it started it never came back). Honestly, covid was probably lighter for me than 90% of other flus I had.
Anyway, even though it was this easy it absolutely destroyed my blood sugar control. I am now risking of being considered as crazy, but my apidra almost completely stopped working for a few days. Usually I take one unit for every 10g on carbs, but I ate 40 grams of carbs, took over 30 units of apidra (I took 5, then 5 more, then 10 more etc) and my glucose still went to 21-22, which never happened for 3 years.
After I took first 10 units of apidra, I took new pen, thinking that insulin is not good. However, that wasn't the case.
Over the next few days, I went to zero carbs, because as soon as I take any carbs, my sugar went to skies. Interestingly, my tresiba seemed to work normally, but apidra almost stopped working. I was really scared that apidra might start working again immediately and that I might go to coma if that happens (if I overdose).
This was happening for a few days and then it started slowly recovering. I had periods where I needed to take 3-4 times more apidra than usual, then 2-3 times more, than 2 times more etc. It lasted probably for a month, slowly returning back to normal.
Again, for me covid was really light, I am vaccinated, I am 30 years old, and my HBA1C tested a few days ago (so including covid) is 41. I never had issues before covid, but while it lasted, it was absolutely mad.
Therefore, assuming it is the same case as with me, it will all come back to normal and you shouldn't worry too much.