u/Easy-Wishbone-4250

Hi all, I am 24M, a working professional and preparing for BPSC from past 3 months. In the given time i was able to score 55-75 marks in tests, but half in science and aptitude(JEE Background), little improvement in rest subjects but not confident enough. I am planning to buy crash courses to get in mainstream as i am preparing for mains from day 1, pls suggest if something else could be done.