I get where you’re coming from. I’m exactly the same way. Was on track to be over 620 hours for 2020. Was exposed to Covid mid December and thought I was okay to ride when experiencing the first symptoms.
A few days later I was laid up. Brutal back pain, fatigue, headache, etc. Thankfully no breathing issues nor need to go to the hospital. Was lucky for sure but wished I hadn’t ridden the times I tired in the beginning.
Finally feel like getting better after about three weeks. Will be a bit till back to normal for sure. I think a lot of people underestimate this but there really hasn’t been something like this in our lifetime.