Money and kids two emotional subjects. Why exactly do you want change it up? Has it been a issue in your marriage? Would it help to really talk about this? This was a issue for us and it has helped us redistributing the tasks and talking more about it. It helped us in the partnership of being married. If you think she might file on you then you need to have some money in your name. I think you need to tread carefully here, she is going "feel" trapped. Maybe it would be good just to have discussion about how to do things better going forward. Be prepared for her to look at you as if you are a martian though. I would maybe look at it as just as allocating money for different goals (savings, college, retirement, fun, etc.) I would get some input from the women before you do anything.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.