By giving him the time and space that he has asked for you are being respectful of his wishes. It's an action that he can see and you know what we all say about actions....
I hope in time he'll forgive whatever it is and be able to forgive and move on with you in his life. But in any event, you have done all you can do except for maybe one thing....I didn't hear you mention anything about forgiving yourself. That's equally important. I've found that when I can forgive myself, I am so much more ready and able to forgive others too.