Kudos to you for trying to present a calm and realistic picture for them. I can't imagine how I would be handling this - certainly not as well as you.
It's a delicate balance and just realize that if you pull too hard in one direction - they may simply dig their heels in and lean in the opposite direction. Make yourself available to him and take the openings to discuss it that he gives without making it feel like a lecture. Easy for me to say - even harder if not impossible to do.
