How many product manager interview questions should I prepare?
Fewer than most lists suggest. Five or six strong examples, each mapped to a recurring theme, will cover most of what a loop asks. Preparing fifty answers usually produces fifty shallow ones.
Should I memorise my answers?
No. Memorised answers tend to break on the first follow-up, because the follow-up is where the interviewer is actually testing your reasoning. Practise the decision and the evidence, not the wording.
What if I have not shipped a large product?
Scope is not the same as seniority. A small, well-reasoned decision with a clear outcome interviews better than a large project where your own contribution is vague.
Why practise out loud rather than reading through questions?
Because speaking is where answers fall apart. An answer that reads well on a page often runs long, buries the decision, or loses the thread when someone interrupts to ask why.
Does this work if I am moving into product from another role?
Yes, and the mapping matters more. The themes are the same; the work is identifying which decisions in your background demonstrate product judgement, then practising them in the language the target role uses.