I went through this, I am now divorced.
I think the menopause does open your eyes to how the relationship really is.
I let it go on too long and thought I could endure, until I couldn’t.
I have slowly come to realise that my ex had secretly felt the same, but had had a cold hard look at divorcing and realised he would be significantly worse off. We were both retired, adult Dc, I was still doing all the housework, he had his hobbies. Why would he want to change things?
He proceeded to carve out his own separate life and went out and spent what he liked, whenever he liked. I stopped trying to get more connection, help and never complained, but I seethed with resentment.
The final killer for me was as this situation progressed he saw me as the impediment to his life and started to use his anger to keep me in my designated box.
Have a very long look at your life and what your future will be if nothing changes. It’s likely you can’t change him, and he won’t let you try, so the change will have to come to you.
Knowledge is power - so look into the financial situation of divorce. Just because you know, doesn’t mean you have to do anything about it - but it may help stifle that fear.
Start journalling your thoughts, go to solo therapy, read online as much as you can. Keep a mood diary. Look hard at yourself ref moods etc. seek help if needed.
You may not want to divorce today, this year or next - but if nothing changes you will be thinking about it seriously as the years go on.
My ex became a bully and the divorce was horrendous- but everyday I’m glad I wake up alone in my own house.