I dont think, it makes a lot of sense to make those kind of rules. If you are considering to move up, the main questions to ask yourself are:
1) Do I think, I can beat the next limit?
2) Do I have enough bankroll to play the next limit?
If you did not yet beat your current limit for a significant amount like 50 BIs, its kind of difficult to give a positive answer to question 1), so in that sense a certain minimum of hands are needed. But maybe you are a winning tournament player already, and you sense, that your current limit is insanely soft. And in that case maybe there is no need to spend a lot of time looking for confirmation, if you can answer yes to question 2).
1) Do I think, I can beat the next limit?
2) Do I have enough bankroll to play the next limit?
If you did not yet beat your current limit for a significant amount like 50 BIs, its kind of difficult to give a positive answer to question 1), so in that sense a certain minimum of hands are needed. But maybe you are a winning tournament player already, and you sense, that your current limit is insanely soft. And in that case maybe there is no need to spend a lot of time looking for confirmation, if you can answer yes to question 2).
