STOP! Don't try to do everything at once. Do a budget for Dec.-Jan.:
-- We put X$ toward debt, X$ toward bills, X$ into separate discretionary accounts for each of us.
Do a childcare schedule for the next six weeks.
There is no reason to plan for April now unless you are going for a legal separation agreement right now. What will you agree to in April is not the same thing as what you will agree to now. If you are going for a legal separation agreement now, by all means first talk to a lawyer, discretely. Don't go blabbing to W. Be decent, but not stupid.