Its hard but for chemistry ncert is sufficient so it will not be a problem,also for extra syllabus in physics it is sufficient, regular syllabus be perfect with hc verma theory and sums. Maths read theory from cengage or arihant and do some solved problem to enhance your application skills. I personally feel that many students ace theory but are unable to develop application skills and for Joe Burrow Tres Amigos AMarr Chase Tee Higgins And Tyler Boyd shirt solved problems are important. Also just seeing the problems solution will not do you any good ,you have to assess it and try to develop an instinct that this sum should be done this way. I am recommending the above books for solved problems because I have seen that the examples in these books are basic and when you become acquainted with the basic tools, you can solve complex sums too with these basic techniques. after this do Previous year questions (it helps a lot for mains). if you cannot complete all previous year questions atleast see last 2 year questions to be familiar with the latest models being asked in mains. I have seen that many recommend practicing a lot for maths but i think for people who dont like solving and solving problems this will be enough.If you have enrolled in coaching maths and physics they will prepare you for mains.(i mean notes will be there for theory, sums can be done from pyqs).
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