Similar experience. I started with LV plans for rolling road - for about 9 months. Then with work reductions w Covid I increased to MV. I think that’s where problems started. I was feeling fatigued in specialty phase and quickly switched to LV climbing and restarted. That was ok initially and then I started failing again. much to my surprise.
I think it was a combination of issues - too much volume and a lot of life stress with some real deadlines. I also think that the climbing plan wasn’t great for me as a choice.
And as a result felt guilty about not riding FWIW I’m 58 and pretty fit
I’d suggest a real break. I’ve found a real break for real recovery, both physical and mental/emotional is more useful than taking a week off. In the long run a return to mental and physical cycling health will do you better. Persisting with short “recovery” attempts will make you miserable. Over time I have found my mental and emotional states around the bike are as it more important than physical. It’s a razor edge - I ride for mental health and yet too much riding is a bane for it
By all means talk to your GP and rule out other health issues. And then allow yourself recovery. There isn’t any shame in that
After 2 months off I’ve started riding. Outside just for pleasure other than commuting short distance to work and inside with train now when I feel like it and only then. I started at 30 min endurance rides and stopped if it felt like too much.
Ultimately I realized my riding is for fitness and fun. I don’t race. I don’t even ride with others anymore. If I make it a contest I can’t win or a test of wills needlessly I’m doing myself a disservice