Let’s say my potential career doesn’t work out, is it ever too late to start college for my “plan b” career?
It is never too late to plan your career or go to plan B.
But, it gets much harder to go to school and to change careers when you get older, so we recommend you "Aim High."
"Aim High" means go for the career that requires the most education. It's easier to drop back and settle for less.
Given a choice between going to college to get a 4 year degree or going to vocational school to become a carpenter, auto mechanic, cosmetologist, tattoo artist, I would always go for the harder one first.
Once you get out of high school and start working in a job, you will start getting used to having money to spend. It will be very hard to quit your day job and become a full time student.
Full time students are usually poor and don't have any extra money to spend.
So go for the most schooling you can get.