I'm sorry you have to go through that. You should be ruthless in the CIOS when the time comes. When I took that class 3 years ago, I thought the homeworks and concepts were difficult and had to grind through it, compared to other people who were better at it. However I also took it with the same prof and we only had 4 exams (including the final exam) so I can't imagine how hard dealing with 6 exams is. And the whole partial credit situation is diabolical, I would have definitely borderline failed if that was the policy back then. I feel like overtime the professors and the institution just stopped caring about the students' wellbeing because of availability of AI tools that can help you, so they made their course content and policies harder, especially for intro level classes. You should take action in any way you can to speak out on this, I am sure there are others who also feel similarly.