I'm making the assumption that, with the ending of his affair if he were to do that and come back to you, you would also both get some GOOD counseling, or possibly do a Retrouville weekend or something. The old "status quo" does not sound like it's acceptable, to either one of you.
I don't know a lot about your marriage, pre-this affair. I was responding to your doubts and fears that anything can happen in 60 days. PLENTY can happen.
For right now, though, "drop the rope" is EXACTLY what you need to do. Just work on yourself right now, and being the best mom you can be, as you have enough challenges on your plate without having to worry about how to get the azzhole back.