I am just offering a different point of view, not disagreeing with the other experiences on this thread.
I d like to think I have fully recovered from confirmed Lyme diagnosis with Doxycycline for 14 days. I had fever and weakness for a week and lowest HRV reading my Fitbit ever recorded (7ms v 50ms avg).
Interestingly, I have a lot of symptoms like anxiety, sleeplessness, and brain fog even today, but I know for a fact I had it even before Lyme. It had peaked during the COVID times when I sat at my desk working over 10 hours on the regular because there was literally nothing else to do.
So at-least in my case it seems COVID was the trigger and Lyme didn't seem to move the needle much either way.