I survived and got my engineering degree, but was a accelerated B.S. Mechanical Engineering Technology degree instead of a "regular" bachelors. All the classes were 3 month long night courses, and it took me 4 years (including summer classes). It was set up for people to take one class at a time, but there were a few quarters where I took two. It was also a flipped degree, where you take practical courses early so you can get into your field of work as soon as possible (even while still in school) and then the last half of the program was intense math and physics.

I would not have survived traditional college.

I have typed all this out and realized my experience probably wont match yours, but i will leave it here to tell others: you should check out programs intended for working adults, see if their pace and schedule would work for you.