Hey,
I totally understand what you’re going through. Freshman year was also tough for me and I didn’t do as great as I thought. One thing I learned is to review. When you go to class, keep yourself focused as much as possible. Don’t get distracted and follow what your teacher is teaching(it takes a lot of effort to do this, especially for those 8ams, but it helped me a tonne). This way, you get the generally idea of the concept and can gauge how difficult it is for you. Then, go home at night and review your notes. Go through and see if you can understand it again. If you don’t, make a comment about it and either email your prof or go to OH for your question. This way, you cannot fall behind.
If you like reading, read the text before going to class. If you don’t, don’t worry because you can still do well, provided you talk to your prof.
Also, perhaps find other people to study with. I generally study alone because I get distracted easily and don’t like having a lot of people around me when I study. But for my hard class(EECS 281!!), I found a study group and it was really helpful.
As for your current grades, don’t worry, it’s freshman year and during your interview, you could explain how it was tough adjusting to college(which is common thing). But I would also advises studying the math courses and orgo on your own. Umich has a weird math dept(it’s not bad but a lot of people complain about the teaching) and orgo is a class they purposefully make harder than it needs to be. So tell your parents to give you that third change and study!!
Good luck and Go Blue!