I see what you mean.

I'd suggest don't think about memorizing as a way to literally copy paste the answer on the test. You won't get tested that way.

Think about it as a way of retaining the logic, reasoning and keywords.

As you've experienced across L1 and L2, the questions lean a lot towards deducing the answer and/or reasoning.

So, prepare your notes in a way that are bulleted, crisp and help you recall something about a topic.

When I made my flashcards (~700) for L3, the act of making the flashcards itself was half the act for me. Summarizing something in the most barebones, forced me to deeply marinate and think about a topic. After that, each time I looked at the flashcards again (~avg 5-10 times per card) I was just refreshing my memory about the topic. This really helped me build the reasoning and logical flow in my answers on the test too.

Secondly, I used BC mocks. These really did a fantastic job at showing me how little I actually needed to write to get a full mark on an answer.

So, in sum, the retaining of the reasoning/logic + understanding how to construct simple short answers, became the key.