Can you do a medical withdraw or is it to late? You'd have to take everything over again but you may keep your aid, look into it. Or see if they'll let you take I's and make up the work. It can't hurt to ask. Taking part time seems like a good plan if you can stick to it for that many years. Your not a failure many people take longer to get their degree, life happens, be kind to yourself. What would you say/think about a friend in that situation? Look into trio [student success services(???)] program is for disadvantaged students. Usually they have their own counselors, tutors, book/calculator rentals...What I'm trying to say is build a support system for when you go back. What type of Engineering are you doing?