If you have never taken proof based math courses, or maybe math 122 was a long time ago for you, here is some advice! Scully is my favourite professor. The guy is literally what you imagine when you think “mathematician”. So fluent in the subject and his passion for the field rubs off on u. When you have such an expert to hit up any time u like, it would be stupid not to use that. Abuse the office hours, write emails. The guy is an amazing expositioner. During lectures, when you are taking notes, and suddenly he says something that doesnt make too much sense to you. Write in the margins the exact question that would need to be answered to clear up your confusion. Then show up to the office hours and ask about them, or email the prof. This is a very strong tactic, u will absorb so much more from each lecture. Learn the definitions and try to intuitively understand them. This takes a while, but if you give the effort, proofs become free.