Quick tricks can help you survive a hard pair of verses once. They rarely build lasting clarity.
Logic is stronger because it ties the wording to meaning, progression, and placement. When you understand why a wording belongs in one context and not another, recall becomes more stable under pressure.
Sometimes that logic is already present in the surah mindmap itself. The way the branches and transitions are structured can already make the correct wording obvious. In other cases, the mutashabihat problem is a sign that the logic of the map needs a small edit so the distinction becomes more explicit.
This does not mean mnemonics are forbidden. It means they should remain secondary. The strongest resolution comes when the verse makes sense in its own place and your memory is anchored to that place.