Osap for engineering students

Hey guys, I've decided I want to become an engineer, but the tuition is way too much. I plan on going to TMU and entering their chemical engineering program, but when I checked tuition and fees, it said I'd be paying 7k per semester. I've been doing the aid estimator, it says I'd only get 4k, and I'd have to pay back 6k. My family is very broke, so they aren't going to be much help. So I'm just wondering, has OSAP covered anyone's engineering tuition fully? Is there a way I can get osap to cover my tuition cost?