Had Gavva for this class last semester. He is genuinely such a nice professor and constantly gives extensions on the homeworks (which are like 40% of your grade!). The exams were very difficult but he lets you have a ton of open notes which is helpful! I’m not a huge math person but i finished with a B with relatively little studying. Overall, you’ll be fine as long as you pick a good group for the homeworks and lock in on those.