Well, I agree with others - age has a lot to do with it. 366 is not terrible but not very high to begin with so coming back by half after being completely shut off is not that terrible.
The body just doesn’t bounce back as it once did and although there are some men in their 70’s and 80’s doing things a 30 yr old would do, it is very, very rare.
Perhaps supplements - CoQ10 and Wisconsin ginseng might put a little more spring in your step?
Just my opinion, but after what you’ve been through why take the chance of giving fertilizer to some dormant seeds? Take the W and run like hell!