He could inch his way to it. If you are near a city where a local university has a night program, he could pick up a MS in Physics or a MS in EE (Close to Physics but more employable. It would cover some of the same ground for graduate Physics later.) If he’s not married then its very doable. It’s pretty much what I did. I even managed to find time to play rugby, date my wife, the sleep part became a scarce commodity but somehow I survived.
His girlfriend’s parents mortgaged their house to enable her to get a “BS math degree at Georgetown”. Why? Did she do anything with the math degree other then hang a sheepskin on the wall that said “math degree from Georgetown”? If that’s all it really was a waste of money !Georgetown is NOT a center in this country for mathematics! If it was Princeton I could almost understand. No, not even then go to those places for graduate school!
I’ve worked with some Georgetown grads, none were STEM majors, overall not impressed!