@ xavier
the following way will help u to get 95 percent in class 12th board exam , Remember class 12th board exam only focus on how u can represent your answer , so, be carefull while writting the answer .
1- practice the previous year ques paper of 7 years , they are most imp for the board exam point of view .
2- revise each and every derivation in every wekend
3- make a list of name reaction and reaction mechanism , and revise it regularly ,
4- read ncert twice .
5- solve each and evry ncert examples , exercise and ncert exempler questions .
6- take at least 2-3 sample paper test .
HOPE IT CLEARS YOUR DOUBT '
ALL THE BEST ..