Upsc mains 2027 prep help

I gave this year’s prelims 2026, and unfortunately could not qualify due to several health issues

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I am preparing now for next year attempt, and I am quite confused on where to start again, I have completed my foundation of all the subjects once, but I have not made crisp notes for mains itself. My optional is geography, and I have completed it once and revised it once.

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I am planning to complete it in this year, along with answer writing

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It would be really helpful if someone who has cleared mains suggest me with some good advices on how and where to start?

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I just completed my graduation and feeling completely lost as I don’t have any coaching guidance (the one i joined turned out completely useless and wasted my 2years )

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Those who have cleared mains or are veterans please suggest mainly for mains 2027 , it would be of great help .