I’m sorry - that all sounds rough.
I just looked at your other thread; can you really not make things add up at Carleton, or are you just concerned that you won’t have a sufficiently employable major there to justify the cost? Do you really want to do engineering, or are you considering it for employability reasons? What would you study if you could study whatever you wanted?
You mentioned getting into UCM - how does that aid package look?
Might it make sense to consider committing to Carleton, but deferring a year? You could apply to funded gap year programs like City Year or another Americorps program… or just work and build up some financial buffer. If you then decide you’d rather go to CPP, you can just reapply - you’d get in again. But you’ll have your Carleton offer locked in, and it sounds as if the financial aid package might be more favorable a year from now, because of your family’s falling income.
In terms of STEM majors that could work at Carleton, have you considered the Cognitive Science major? Because it’s interdisciplinary, you could tip it more toward the premed life sciences (bio, neuroscience) if you decide to go that route, but you could also lean the emphasis toward computer science/AI/UX and acquire skills that could get you into a tech career. Statistics is another major that can work well for premed but can also set you up well to work right out of college.
Maybe I’m mis-reading the situation entirely… but just wanted to run those thoughts up the proverbial flagpole.
Although… I also realize that you may be looking more to just process your understandable frustration, than to problem-solve at this moment; I apologize if I’m on the wrong wavelength. It just sounds as if college really should be your way out, and I’m not clear how you got to the place of concluding that it can’t be. 