Preparing for UPSC without guidance is possible when you let the syllabus and Previous Year Questions act as your guide. They tell you what to study, how deeply to study, and what UPSC actually expects from aspirants.

Start with basic NCERTs and a few standard resources, and study the syllabus topic-by-topic instead of jumping between subjects. Using self-learning tools for PYQ practice, answer writing, and tracking your preparation can help replace the need for constant external guidance.
When your preparation is structured and consistent, self-study becomes much more manageable and effective.