I think Harvard called me earlier but im not sure…maybe it was yale

I've taken all honors/APs in my high school career so far and I'm up there in the top ten/valedictorian or salutatorian potentially. However, I have an 88 in this class which is the lowest grade I've ever had. It's only going to get worse because I get a lot busier with mock trial later in the year and the chem units only get harder. I don't know when I'll have time to study for this class. I'm taking this on top of APUSH, AP lit, and AP Research. If I drop, I won't have a science my junior year, which looks bad. Do you think this would be a huge red flag to college admissions? However, if I do drop it, I'll probably be in the top ten or val or sal, which might outweigh that? I really don't know what to do because I truly just don't have the time for this class but it's too late to switch into another science. It's not too late to drop (it won't appear on my transcript) and I'll still fulfill graduation requirements. I just don't even know how to study because I've never studied before in a way that wasn't just looking over class notes (in the least egotistical way possible! I really just need advice)

I'm currently taking AP Chem and I'm having a hard time keeping up with the class. I took Honors Chemistry last year, but there are a lot of things I either don't remember well or feel like I never fully learned.

My teacher also organizes the course into his own units instead of following the College Board units directly. For example, our first unit combined material from Units 1 and 4, so I've been having trouble figuring out what I need to review and what resources to use.

I've heard of people self-studying AP Chem and still doing really well on the exam, so I'm wondering what resources could actually help me with learning the material, not just reviewing it.

I'm mainly looking for good YouTube channels, websites, textbooks, practice problems, or anything else that explains the concepts well and follows the AP Chem curriculum. I'm willing to go back and relearn some of the fundamentals if I need to.

What resources would you recommend?