Advice for taking AP Chemistry online?

I go to a small high school that doesn’t offer any AP classes, but I’ve self-studied for a couple in the past using review books (Barron’s, Crash Course, etc.). For my senior year, I want to take a couple AP courses using an online provider. I specifically want to take AP Chemistry, but a lot of people I talk to say it’s very difficult/challenging/rigorous. Seeing as that I’m taking regular classes at my high school plus this online AP class, does anybody have any advice for me? Any tips on how I can handle/manage the workload and stay organized? Is AP Chemistry really as challenging as everyone says? If you’ve taken this course online, how much time did you dedicate to it each night?

Thanks in advance!