Welcome to active participation!
It's too early to be in constant communication so follow your instincts. Try to allow him to be a part of your life, as opposed to your entire focus, as he seems to be doing with you. It's probably ok to do most of the initiating, but if things progress I'd expect it to be more balanced. So, stay interested and at the same time don't try to force anything. It appears he wants to take it slow. It would be nice if more of a spark would already be in place but not everyone operates that way. Good luck!