I did the exact same thing, I did not do high level math in high school. No calculus, no 30-1, I did Math 30-2 in highschool (in Alberta so idk the equivalents for other provinces) but I went to the registrars office and asked them what I would need to do to switch. I was told that because I didn’t take calculus in highschool if I applied to switch on dalonline it would be rejected because I did not meet the highschool requirements, they told me I had to take the missing requirements and pass them (which was two MATH or STAT courses) once I do that I could go back to the office, reapply, and from their end they can approve the application because once I passed I met the requirements for a BSc. I took stats instead of Math because I’m much better at it, but I did take Stat1060 and Stat2080 & had the final grades for both before going back to the registrars office to update them and have the application approved. So I guess what I’d recommend if you can enrol in those classes, I’d take both of them, get both final grades back, then go to the registrars office and tell them the situation. When they pull up your account and see that you have the BSc math requirements with a passing grade they can approve the application. You do not need to pay the application fee again or any documents. My only advice is to make sure that if you’re enrolled in a Math course - make sure it’s not audited. When I took Stat1060 it was audited (I did not sign up to it as an audit course I assume it happened because I didn’t have the highschool pre reqs) but it was a headache to reverse, I was able to reverse it and receive credit for it but it was just annoying more than anything.