Surfbee,
I'm glad you have put your boundaries out for you Abf. Is he getting help with be abstinence for the next two months. Those first few months are the hardest and it's when people fall off the wagon the most. This is his journey, so this should give you more time to focus on the new baby boy.
I'm glad you have a plan "B" if things don't work out for you at you Abf place. I hope that they do go good for you there. But you can't relie on hope. It take constant communication and honesty.
Once again have a great day. I hope you are getting plenty of rest. And as always Keep being strong for you and your son.