@ shreyas ,
its impossible to complete organic chemistry of class 12th if u are studying that for the frst time ,
at best if u can ignore the last 3 chapters ( chemi in everyday life , biomolecules , polymer ) then it will take at least 1 month 10 days around .
and rest assure – if u are done with all other chapter . then u can easily get 50+ in chemi , if u leave organic completely ,
the last 3 chaps are easy – they contains 10 marks all together , and rest organic chapters will account for 15 marjs only .
and i am predicting some imp top[ics by which u can easily get 10 marks .
1- nomenclature of haloalkanes , amines .
2- HVZ reaction / rosenmund reaction / finkelstein reac ( any 1 have high probability of 3 marks ques )
3- and just read the physical and chemi prop ( boiling , melting point and all ) – they contains a 2 marks ques ,
and when u are revising any sample paper or prev year ques paper , just look for the conversion process ,
and remember – conversion is step wise marking , so, if u can do 1 step u can get half marks .
so, dnt worry for organic , no need to do full chap as far as board are concerned .
and most of the organic ques are repeating from prev years ,
ALL THE BEST