Dear Amit,

In order to prepare for your exam it is recommended that you should make your time table according to your comfort. So, that you can easily follow it. If you want you can also set daily and weekly targets as well. Devote time in each subject as per your strength and weakness.

You should start your preparation through NCERT books to work on your concepts and to build your fundamenatls strong.

Apart, from NCERT you can refer below recommended books

PHYSICS

1-Concepts of Physics Vol I and II by H.C. Verma

2-Fundamentals of Physics by Halliday, Resnick & Walker

3- Problems in General Physics by I.E. Irodov

MATHEMATICS

1- Maths XI & XII by R.D. Sharma

2- Plane Trigonometry Part 1 by S.L. Loney

3- Plane Co-ordinate Geometry by S.L. Loney

4- Higher Algebra by Hall and Knight

CHEMISTRY

1- Physical Chemistry by O.P. Tandon

2- Organic Chemistry by Paula Bruice Yurkanis

3- Organic Chemistry by O.P. Tandon

You can also refer to previous year papers and mock test series for your practice.

Good Luck!!