he might be shy of responding because he feels he would be obligated to respond to the big question out there. He is likely in his cave. Give him time to come out and don't be waiting by the door (email about insurance $).
I know to you thats not what you intended by your email but remember it is not how we see things, it is how they see things. Speak in his language, at his time, at his place, and on his agenda. One sided very true, but plenty of time to find balance later.
