Candidates should adapt their study habits for different subjects in UPSC by identifying the specific requirements and characteristics of each discipline. For factual subjects like History or Geography, employing memorization techniques such as flashcards can be beneficial. Analytical subjects, like Political Science, may require a focus on critical thinking and concept mapping to understand interrelationships. Additionally, for subjects with a heavy emphasis on current affairs, regular engagement with news media is crucial. Tailoring study methods to each subject allows candidates to optimize their learning process and effectively prepare for the diverse UPSC syllabus.