Off course you can crack the exam in 2021 by planning your studies from now itself , no doubt the board exams are equally important , but don’t forget the syllabus of NEET 2021 also the same as your 12 Board but in objective pattern .
When we need to appear an exam in objective pattern , we need have our Foundation perfectly clear , for which you need to get back to your science books and notes of your junior classes to get the perfect complete knowledge . There are different online classes also in special the one started by the NTA itself Abhyas , it is a perfect test series to be learnt from .
One advice to you is don’t look towards anyone just concentrate your self , compete with YOUR BOOKS and for yourself .