hai Biswajit Chakraborty, well it was a good gesture you concentrated now itself it was a very easy thing to get seat in jee only thing is practice well goo with all the acdemics then make sure you are good at some of the main topics in maths phy chem clear the topics like a time table and again repeat them dont leave the repitation. repating the topics will leave you perfect in that subject repeat until you attend the exam all the best for your career