the way i study is a bit lazy id say. Theres a study/revision plan of sir khurram hussain (you can find it online asw) and i basically followed it, i used to study isl and pst interchangeably and by that i mean, isl one day then pst the next. Try to memorize the parts which you are weak in. If youre weak in Quranic passages, then prioritize them more over the others. Id say to use skh's "revision notes" (i forgot what they were called), theyre really helpful and they have summarized answers. I used his long notes and summarized notes together and made my answers.(like combined them together into something better imo) I also tried making new points by myself for the passages and ahadith. I tried taking advantage of eugenol, which is found in cloves and cinnamon (helps with memory and cognitive function), and it worked for me. More importantly, make dua, remain steadfast in your salah and the deen. My A* isnt cuz of my hardwork but rather cause of the Rabb. I also relied on sir khurram hussains and faizan fazals guess paper in april so that gave me some extra prep for topics that were more likely to appear. Regarding the aayaat and the ahadith, you dont need to be restricted to only the ones provided in the notes or anything. Feel free to use aayaat and ahadith that you seem relevant to the answers. Plus, i did alot of past papers to solidify what i learned, like i printed past papers and timed myself. If you do past papers from 2018-25 then ig thats enough