Well the separate paths of motivation and free time finally merged today for a couple of hours, and I was able to get my jack plane out and get busy!
I am about 3/4 of the way through “Phase 1” which involves getting the whole top flattish. Then I’ll drop it back down (you may be able to see it’s “up on blocks” (literally) to keep the top clear of the leg tenons) and see how level it is. If it’s pretty close to level, then I’ll smooth it up! If it’s much off (it was almost 1/4” high in some places!) then I’ll get back to work on “Phase 2” and reassess.
Hope to do some more tomorrow!