Hello Shubham

Its very much possiblethat you can prepare from home,if you are sincere and dedicated.

For Biology, you can refer to online videos of Unacademy where you can go for Pranav. For the books,first you have to be read 11,12 NCERT by heart. You can solve previous year questions which will be very beneficial for you. You can watch online  videos on you tube.

For Chemistry, you can follow Unacademy videos. The educator who teaches well are Arvind Arora and Sachin Rana. NCERT is very necessary specially the organic part. You can watch Helios Educore videos on you tube.

For Physics, docwatch Pradeep Kshetrepal videos on you tube. Solve questions from H C Verma, Universal. Solve previous year questions.

Make your source limited. Revise multiple times. Focus on your weak area and work on it.

All the best.