Hello Aspirant

Whenever you are preparing for some exam it is always better to get your concepts right.The second best thing to do is...List down all the important topic with their weightage.Then choose the topics that you find easy to do.

Once done target on difficult chapters.

After you are done ,try various mock series or online test to improve your score

I'm listing down some books that you may use for reference and they are as follows

1. Deepthi Series for Mathematics
2. IPE textbook for Physics
3. IPE book for chemistry
4. EAMCET 25 years chapterwise solution for Physics ,Maths and chemistry
5. You can also refer to ncert textboom for reference.

I hope this helps

Regards!