Yep, the I don't know how to deal w/you is a MLC script. Because they are eaten up w/guilt they truly don't know how to deal w/those emotions and us.

He pulled the 9/3 months out of thin air. It's most likely something he thought about and is projecting on to you. Don't let it bother you.

I would let this email sit. He's definitely feeling a bit pressured/threatened by all of the divorce/child issues.

No matter what you do, he will see it as pressure right now. Nothing is going to make him happy, even if you offered up a golden egg to him. Step back, sit quietly and allow him to come to you. I know that you are trying to work w/him in a very cordial manner, but for some reason, he's feeling a bit pressured.

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.