How???give me answer
do a distance learning program ....for doubts and competition awareness.... cbse plus from brilliant tutorials .. do study 7 hours per day first study ncert books....then ncert at your fingertips...then do mcq ....maximum 100 120 q per day... study 7 hours... physics arora hc verma pandey ncert previous q papers chemistry ncert inorganic physical chemistry tandon/Bahadur / organic chauhan bio ncert Truman's biology all previous years questions... solve as many mcqs as you can...make some of your own from ncert textbooks... stay away from distractions facebook whatsapp girlfriend etc....