The most important thing when doing self study is to take periodic tests on specific topics (1 to 4 times a month), under strict examination conditions, and then honestly evaluate them. This will give you data to base your further study plan on. For Physics, HC Verma is the best and most comprehensive book. Do it top to bottom, and you should be good.
You have not mentioned whether you have completed XII class or appearing this year? If you have already cleared your XII class then you have very good time for preparation. Please ensure daily 8-9 hours self study. Make a timetable subject-wise for your self study and keep regularity. In Maths you can follow "Arihant publishing for Mains". Make a complete chapter wise plan in each subject for whole year so that you can finish your complete syllabus on time. I suggest you at least join a test series at good coaching.