You did a wonderful job of interracting w/him. I wouldn't make a special point of contacting him about notifying you first at this time. Wait until you speak to him again and then offer up his calling you prior to dropping by.
He senses your pulling away and being independent. He's really not quite sure what to make of it. However, he knows that you are okay and will be okay no matter what. He has a lot to process these days and it appears that he will. At least let's hope he does.
You are on the right track!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.