If your DS doesn't want the steps posted, how about a laminated step/reference sheet kept where he can refer to it easily for those personal care task that are multi-step. This can be used for teeth brushing, showering(mine forgets to rinse), laundry, dishes, whatever. It is his personal property and there to help not nag. If he is approaching puberty you are no longer a viable person to talk to due to lack of Y chromosome plus you are old to him and just don't understand. Maybe he and Dad can go out an putter and talk as they do something. Your son is entering that age where sports kids become kings of the roost. He just needs to find his roost.