no, nobody has any idea, it depends on the school, and even then it will vary based on the cycle and when you applied. there really is no way of knowing unless they gave you a deadline or something.

Diagram if the conditions chain more than once. Don't diagram if it's something simple like "if A then B," anything more complicated than that diagram if you can't get it quickly. If you can't do the simple ones without diagramming yet you just need to practice more.

i would recommend "The Loophole in LSAT Logical Reasoning." great textbook and it has drills after every chapter to practice the skills you learn (not LSAT questions but specific drills targeting those skills). on top of that I would totally recommend doing a few questions as you learn, but don't start doing questions until you understand the basics of LR because you'll be wasting fresh questions you can study later.

don't do entire preptests, do drills and sections. it seems like you're making fundamental mistakes on LR. i would say it's possible to improve LR in the next few days, you need to focus on the basics like identifying premises vs conclusion, SA vs NA, stuff like that.

7sage's explanation for C seems weak. I think you could argue that Passage B does talk about how athletics are valued because it says we value them based on beauty. I'd instead say C is wrong because the criteria isn't as well defined or rigid like in Passage A. And overall D is a better answer.

i wouldn't do PTs every day, maybe once a week to gauge where you are at score wise. instead do drills or sections and then blind review them or go over what went wrong. doing a full PT doesn't give you the same level of review.

not sure i would cancel over 2 points, i had the same thing happen and i'm not going to cancel. like you said there's no reason to cancel unless you "flop" and two points isn't really a flop. if anything canceling will look worse because they'll see that and assume it was much worse than a 2 point drop.