Differentiated approaches for preparing for essay questions in UPSC include focusing on themes and structuring essays using a clear format of introduction, body, and conclusion. Candidates should practice diary-like writing to improve expression and coherence. Engaging in brainstorming sessions before writing can help generate diverse ideas. Analyzing previous years’ essays helps understand what the examination expects and can guide topic selection. Lastly, maintaining a stock of quotations and case studies enriches essays and helps articulate arguments more effectively during the exam.