what can do if the paper is according the blue print given by the board
Hello student most of the paper is as per the blue print given by the board before the examination but its preferable that student should cover the whole syllabus and practice it as much as they can because practice is the only key to get good marks in board examination.
Prefer NCERT books and solve each and every example and exercise questions of Ncert.
Feel free to comment if you have any doubt
Good luck