Far out Efjay, you should be an OT I should've thought of that as at each OT session, DS2's OT has a visual list of what he's doing during the session. Great idea.
I spend a lot of time at OT appointments also lol.
I was amazed with my 4 yr old when he would come out all the time when I showed him a child sleeping in bed & said YOU MUST GO TO BED NOW. He turned around, crossed his arm & walked back to hi s bed in a huff but he stayed there! That was the start of his growing up & going to bed on his own (not with me sitting with him) and he needs a reminder I think as he often comes out again.