Hi
cartiroI can't recommend a certain number, but only one is not enough.
Try several mocks till you are confident that you are time managing the test as best as you can, and till you find that the results are consistent.
try several strategies as well, such as random guessing ro smart guessing some of the questions to gain extra time for the rest.
But I can confirm that practicing several mocks already improved my performance without any extra study except the questions I got wrong in the mocks.