My attorney told me to open my own accounts in my own name, clean out half of current checking and savings, remove him as beneficiary on life policies, and to do it all before i file. Also advised me to keep a daily journal for custody battle with times , photos and receipts. I also print off all texts and put w journal. Get all paperwork including kids. Know his social security number if you dont already. Make sure your name is also on title of vehicles.
Hugs, im right here with you.