I did the whiteboard calendar thing and gave him index cards every morning to prepare him for upcoming events. Experience has taught me that for him, the big calendar only caused anxiety. I find that on the day of an event (med appt, guests, etc) I just, as casually as possible, say that X is happening todayand here's what we need to do to prepare He has never said 'why didn't you tell me that yesterday' because sadly he has no yesterday. Try the daily index card (day of the week, date, year and the day's 'agenda'.) It helped my sanity and made him feel like he's still "in the loop".