hi namit

If you have not joined any coaching institute yet i will suggest you you to joined askIItians online coaching or you can also buy there correspondence course because if you will join any classroom coaching now you will not be able to recover your previous course which is over but it is possible in askiitians course

you should first revise your 9th 10th syllabus

you should follow a 4-10 plan means study of 4 hr on school days and 10hr on holidays excluding the time spent in your coaching

remember for clearing any exam self study is must   

you study your tenth class basics properly. and solve more problems

namit! from nowonwards you carefully lisen your classess and then prepare ncert text books very well