Is it possible to not use Chatgpt?

I have really been thinking about the fact that we aren’t supposed to use ai for all of our assignments. It really seems weird to me that people can completely finish all of their homework without using ai. Like I use chatgpt for all my math and physics homework and it still takes me over 2 hours to complete them over the week. This is not including all the other homework I have (which i also use chatgpt for). I really don’t think all of the work we are assigned would be possible to complete without ai. Like even if I were to completely dedicate my life to homework it would take me way too much time to even get close to completing it. I mean like over 20 hours a week minimum. How can others do it? Because i know for sure i couldn’t.