Well, I am biased in this discussion, but I personally think it is WAY too early to suggest that the new schedule has anything to do with their shooting. Especially when you consider how well they shot in the first few games. To me, it has looked a lot more like they have simply had no legs in the last few games...which is not surprising given the schedule, and the players age. If anything, I think the sleep is more important than ever this year.
I'm sure you guys remember last year, when there also were some stretches when they shot absolutely terribly from the perimeter, and they were still having shoot-arounds then.