Walaikum Assalam sister
Well islam clearly defines roll of a wife and husband.Women can work if she is following all the guidelines defined by shariah and not neglecting all her household duties.But if husband is taking care of all your resposibilty and he don't want you to work then you shouldn't work.
But the point is he is not your husband yet he is already showing dominance over you.He should have conveyed his feeling to you in a polite manner that he dont want you to work.
Manner he is speaking now, with such attitude I dont think things will change in future.
There is a high likelihood that he will continue with such phrase "I've decision making power after all I am your husband " is not a good attitude at all .yes surely he has a decision making power but this is not some competition going on where he is showing his power to you.This is a "relationship" and with such attitude relationship doesn't work out.
My advice is based on my understanding about your situation and I can be wrong.
https://islamqa.info/en/answers/2239...usband-refuses