Recommended range
Most candidates benefit from 4 to 8 full mocks. Fewer than 3 usually underexposes timing issues; more than 10 without review often becomes low-value repetition.
Quality over quantity
Each mock should produce a review log: error type, reason, and correction pattern. Without this, extra tests add volume but little improvement.
Readiness signal
Book your exam when your last two mocks are consistently at or above target in your weakest section, not just your average score.