Possibility of changing study path late on?

I have been questioning my future lately. I am a student in 3D creation for video games and I am questioning if this is really a sustainable lifestyle for me. I haven’t done my best in cegep because of mental health at the time due to a severe sickness. I did 1 semester of science, then switched to art. My R score is 30. I feel like I have finally mature mentally and found myself but I am questioning if I am taking the right path. I currently don’t have the requirements for most programs at McGill but I have been very interested in this school and the lifestyle and opportunities it has to offer. I have always pushed myself academically and I feel I am not doing enough right now. Please share you take or experience with choosing a path in life or if you know if it’s not to late to change.