An instruction to make a report stronger can mean better evidence, clearer writing or a more decisive recommendation. Guessing may send you into the wrong revision.
Ask which part needs changing and what the reviewer wants it to do. If helpful, offer the interpretations you are considering so they can identify the intended one. Request an example when the requirement remains unclear.
Confirm the first revision
For a large task, you may be able to revise one section and check that the direction is right before changing everything. Agree on that check if it affects the deadline or the reviewer's time.
Keep the clarified instruction with the work. If several people give conflicting directions, identify who decides or ask them to resolve the conflict through the appropriate process. You do not need to pretend a vague instruction is clear to appear capable. A precise question can save both parties from another round of revisions that look busy while leaving the original concern unanswered.
