To ensure comprehensive coverage of the UPSC syllabus, candidates should create a detailed study plan prioritizing major topics. Utilizing a timeline can help in allocating specific time frames for each subject, ensuring no area is neglected. Regularly reviewing the UPSC syllabus and previous year papers will provide insights into important topics and patterns. Joining structured coaching programs can also help. Finally, consistent self-assessment and adjustments in study strategies will bolster coverage and understanding of the syllabus.