MWD mentioned in DR using the dissolution notification as a starring point. I cannot die the life of me eemeber the legal term for that here in Illinois, but I do remember she specifically mentioning it as an option just before the ultimatum section.
If you are ready AND you just think it is a $hitty couple of weeks coming up, maybe this is a good way to show your wife you are done with this and it will give you some time to get your ducks in an row.
Idk. I would not use this unless you were serious about actually filling, which it sounds like you are.