Hell no!! You can only memorize so much, and that's usually reserved for content not exercises. If you feel like you're gonna forget something first make sure you understood the solution and I mean really understood as in how, why,and why not. Second, if you want, take brief notes on how to solve a particular type of question.
The exercises you're solving in no way cover everything you need to know. So be sure to understand the concepts from your content review underline your weaknesses through the exercises.
Oh and finally, I'd recommend using Anki to help you memorize anything you're scared of forgetting; it's basically a flashcard program and it has helped me and a ton of other people.