To make it further convenient for you I am summarizing the UPSC Preparation Strategy and framing it in a way that would save your time and also check your ability to comprehend things.

Commence your preparation by studying UPSC Previous Year Papers.
From previous year papers, identify the subjects that you have addressed in the past.
Download the syllabus, and mark the subjects you have identified in the syllabus doc.
Initiate syllabus with these topics.
Focus on completing the syllabus subject after subject for the next 5-6 months.
Upon realising you have completed 50-60% of the syllabus, start with answer writing.
Appear in Mock Tests frequently.
Indulge in regular revision and seek continuous feedback from a mentor.
Dedicate yourself to this process for the next 6 months and your syllabus will be finished.


Source by: UPSC Study Plan 2023