doubt regarding RC

start practicing daily, understand where you are actually going wrong. the reasons could be.. you were able to eliminate 2 options but got confused in other two ( a good sign btw... you only need to analyze the points a bit more to eliminate the third option too) , or you eliminated the right answer only ( you have to start understanding and linking the paragraphs in the passage) , you didn't understand the question ( start with daily reading nd side by side start meditating to keep your mind calm while reading, and don't skip on daily rc practices)
most important start maintaining your error log and start working on it from now

RCs according to me is totally your skill on eliminating the wrong answers, there are many videos in youtube which explain the way to eliminate wrong options for a question. Look into them and you would get a hold of how to actually look into options and then according to what Tanisha said you have to start improving your learning speed by reading more articles when ever you have a free time. And as usual pratice, practice and practice