Keep at it while you can. I was fairly active - though not with the sort of high activity you currently enjoy, well done - till I reduced to 8mg earlier this year and became fatigued. I did get some energy back after a few weeks, but by 6.5mg, normal activity had to reduce because moderate pain and lethargy had set in. By 6mg I'd had a full-on flare and was too tired and sore to do much at all.

The prednisone may be helping you stay active. I'm currently reducing again to 8mg. Energy levels are still good so I'm deliberately getting all the bigger jobs in the yard and home done while the prednisone lets me, just to have some solid progress made before another possible (hope not!) relapse stops me doing anything. We need to achieve whatever we can while we can.