Which board are you from? Which stream are you from? I mean whether you are from science ,commerce or Arts stream
Your profile suggests that you are from Karnataka so I guessing that you are from Karnataka Board.
You can get the reduced syllabus of all the subjects of Class 12 karnataka board 2021 for all the streams, that is Science Commerce and Arts by visiting our page the link for the same page is provided below
This syllabus will be very helpful in your preparation because it will let you know the topics and chapters which are included in your examination , so go well through your syllabus and plan your studies so that you can score well in your board examination.
And yes , try to complete your whole syllabus at least a month before of your board examination so that you can give your last one month for practicing mock test papers and revision .
You can get Karnataka Board class 12th previous year question papers at :-
These papers will help you to understand the examination pattern, types of questions which are asked in exam, difficulty level of the examination, you will also get an idea of the important topics which are covered in the exam by practising them so that you can accordingly prepare for the exam , you will also get to know your preparation level
If you have any other query then you can always reach us to get them cleared :) we are always available to help you out and guide you.