I really just think you can chalk this up to "too soon". Neither you nor he can know what the future will bring. Like all other aspects of your life, YOU have learned much more about yourself AND him in terms of your "physical" relationship and I bet things would be different in that area like they are in all other areas of your life. He will just need time to discover that.
I know I struggle with this mightly because I know if my W would open herself (oops) up to the experience she MAY discover that I am a lot more aware than she knows about things that were "wrong" before. That said, as you and I know, a lot of what was wrong in the bedroom started to be wrong in the kitchen, laundry roon, living room, etc. I think when my W, and your H really start to believe in the changes they see, then their curiosity may lead them to wonder what else may be "changed" and better.
Time. Give it time, learn more about what you want and how you want to express that so that when the time comes, you will be ready to be "different".
