Don't remind him. You told him, I'll bet he could have put the date in his phone with a reminder. If he wants to be in the loop, he'll figure out a way.
Does he miss work appts or things he wants to do? You are right not to be his personal assistant.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss