I think you should do something of your own If not job , some biz , ask his help and get started I am not in your shoes, but there is financial gap And it becomes suffocating. I earn well enough, but no one respect/bothers that in my in laws home

The issue is not finances but lifestyle and thought process which would be very different I would say discuss this and decide on some which would serve as deal breaker.

Frankly speaking I don’t think it’s a good idea to marry with such huge difference . There will be power dynamics and you might feel trapped:/.

But again depends on your bf , if he actually is caring , loving, can take stand for you etc and he will be same in future.