Hi! I haven't BTDT yet, but I'm in the same boat. In fact, I also have a DS8 and DD5, and this will be their first year in a B&M school. We are working on writing names on papers--they rarely do this at home. Also, I'm having them practice sharpening pencils. :)
As far as our schedule goes, we are cutting back on outside activities--at least in the fall. My DS8 had two weeks of day camp this summer, so he got used to bringing his lunch (and not forgetting to bring his lunch bag home).
Oh, and we reviewed (for DD5) things like our address, phone numbers, etc.
Good luck!