Hi Mukesh

If your only target is board exam and not JEE Mains, then you should keep your attention to NCERT books only.

For Physics, you can use S.L. Arora also. It is a very helpful but make sure to work according to the NCERT syllabus.

I feel for chemistry all the information given in the book is enough and for Maths, make sure to practice every question in the NCERT Book.

Also, if you have problem in any one particular topic, you can take the help of YouTube videos.