Opentuition notes and technical articles

Hi Sir Ken! I have read the opentuition notes and some technical articles but have not read all the technical articles at the moment. However, I feel like I need to be practicing past exam paper at this point instead of trying to read through all the technical notes. I'm kinda panicking that I may not have enough time to finish them all. Would the opentuition notes cover technical articles already or should I still read through all the tech notes? Which means less time to practice past exam papers? Any advise Sir Ken? Hope to hear from you soon. Best regards, Kyle