Bruh this is some hard core sweat-ery here. Enjoy your last Summer of freedom.
During the initial few months of sixth form I worked long nights to keep up with the work but I'm chilling now, when the lesson content clicks, the classwork clicks, and your hwk clicks, it diminishes your workload significantly. No need to spam flashcards or anything. Though, the spec may prove to be your best friend, and in any case, your calculator.
-Maths, FM, Physics, Chemistry.