I think i understand what you mean as economically abusive. Like, if he controls all the money and you can't do anything without permission. Has your relationship always been a controlling one or has it gotten worse? Are you unable to work yourself? If so i can see why itd be terrifying to strike out on your own. Maybe he feels you growing more independent in other ways so hes trying to keep you close and under control.
Theres a book about codependentcy that i cant reccomend enough, called the language of letting go. Its like a daily meditation type thing. I didn't even know what codependent behaviour was before, but now i know, and i have it bad.
So one of my goals lately is to become my own person, make decisions for myself, get a job, etc. I know its easier to say than do, but i wish you luck and strength.