It's tough but you have to separate the D process from everything else and treat it like business, nothing more.
I know right now that seems difficult but you can do this.
Lawyers play a game, $100 letters, $50 phone calls, and the list goes on and on. You need to learn this game and how it's played.
Soco is correct they will ask for much more at first to give them room to negotiate down to what they will accept.
You need to fight the urge to talk "business" with your H.
DON'T. Do not mention a word to him. NEVER.
You can't afford to reveal your hand or get caught up in a he said she said back and forth pointless discussion.
Leave it to your lawyer to handle your "business."
Lawyers are NOT the law. Do not get intimidated and do NOT give ground. Now is the time to really look out for you.
This sucks big time, you will go through a range of emotions, make sure you use your head and not your emotions to make decisions. It will get better. Many of them will have to travel down every dead end road including following through with the D before they realize it doesn't fix a damn thing.