A great walk up The Hill this morning.  Jack's enthusiasm was almost back to...if not pre-crash levels, at least early post-crash levels.  He dragged going up the hill a bit, but once we got to the second landing, he had some water, and seemed much more comfortable in his skin than he has lately.  He was still a little 'skiddy' about the people we encountered, but we went off leash on the last pitch, and he chased off looking for rabbits for the first time in a long while.  Better still, he returned when I asked him to!
We'll keep watching to see how he does, but I feel pretty good about his medication level and timing.