The recommended frequency of taking full-length mock tests for UPSC is typically once every two weeks, adjusting based on the individual's study progress. These tests simulate the time constraints and pressures of the actual exam, helping candidates build stamina and familiarity with the exam format. Regular mock tests allow candidates to assess their preparation level, identify weak areas, and adjust study tactics accordingly. Taking feedback from each attempt helps in improving strategies and time management. As the exam nears, increasing the frequency to once a week can help reinforce knowledge and build confidence.