Reuse the evidence, not a memorised script, and adapt it to the prompt.
In a short final-round conversation, a question may overlap with an earlier round or approach the same theme from a different angle. You do not need a completely new experience for every version of the question. You do need to make the answer fit the question you are actually asked.
Prepare a short card for each of your strongest examples: the situation, the decision or action you personally took, the result, and the lesson. Then add a second proof point for the same theme. This gives you material to reuse without sounding rehearsed.
For example, if you are asked about leadership after previously discussing the same project, focus on how you aligned people or made a difficult decision. If the question is about resilience, use the same project only if the real evidence is how you handled a setback. Do not force the old answer into a new prompt.
For a 30-minute conversation, prioritise a clear answer over a long catalogue of stories: state the point first, give the relevant evidence, and pause so the interviewer can probe. Prepare two or three thoughtful questions as well. That is more useful than trying to predict an exact question list.