TJP, Do not contact your h unless it is an emergency. If your h does contact you, wait a while before responding so that it does not look like you've been sitting there waiting for an email/text. When you do respond, keep your response short and no more talk about him coming back, etc. Their attention span to length emails is very short and most likely will not be read completely.
He's off in another world and most likely will not email your YD very much. His attention span is that of a gnat. His attention right now is to have fun and more fun and the life he left behind will remain in the shoebox in his mind until something clicks and draws his attention back to that life.
Keep the focus on you and your children. Go on w/your life as if he is never coming back and do not "expect" him to do the things he use to do as you will not be able to rely on him for anything. Keep your expectations at zero at all times. The man you knew and loved has been stuffed down inside of his soul for the duration. The man you see now is the reflection in the mirror, the exact opposite of the real man. Learn to accept him for who he is right now, not who he was.
TJP, I'm so sorry you are traveling this path w/us, but there are many here who will assist you along the way.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.