Hey i know u are asking for senior students...i am pc2 but i think my answer may be helpful. I can relate to what u are saying. In facts i think most of us experienced this. What u should know is that first accept that u can memorize everything just by reading the ppt once. So accept the fact that you might forget it after u read it once. So u should repeat it. When u make schedule, make it in a way tha can enable u to read each ppt at least once. And have ways to go over the slides in different ways...for example through videos, flashcards, maybe with ur own notes,... read the ppt more than once and go over it using different techniques. Yes maybe some ppts are enough if u read them once...that leads me to another thing. Know which topics to prioritize. When u start studying for exam, observe the exam content and decide to focus on which ppts. For the remaining ppts, allot shorter period of time. And this can also go deeper into specific ppts. Don't try to memorize everything in a ppt! If u have attended the lecture, definitely u will have idea about on which things u should memorize. So using different techniques, try to reduce the number of things u memorize...because not eveyrthing is gonna appear on exam and u will memorize better if u decrease the workload for urself. But when u do that, don't mistake of underestimating some details.....sooo just know that everybody forgets after reading once. The key is repetition and being consistent enough to use ur time properly to do questioned and go over the slides in different ways. Ayzon you got this! Good luck!