How to prepare for upsc civil services prelims in 3 months. Here i am mentioning only the important books which are very helpful to clear prelims.. The main thing that should always remember is to saty patient, consistent and follow the perfect schedule regularly before you start preparation. Is it really possible to clear prelims with 3 months of preparation...? The answer is yes.. If you dedicate 8 hours a day and do good revision then definetly it is possible.. And one more thing to remember before starting the preparation is to make sure that u have atleat 2 months for the REVISION PART. that means one must have to complete the syllabus before two months to the exam.. Most of the students fail to get through the prelims even though they are preparing from 6 months or one year, because they are not going through the very important part of preparation that is REVISION.. so remember guys make sure that you have two months for the revision and solve as many ...