As a class 12 student, how do I score good in the NEET as well as the board exams parallel?

As a class 12 student, how do I score good in the NEET as well as the board exams parallelly?

Prepare for NEET point of view the whole year. Only that last month or two would be sufficient for boards.
Whenever there are tests both at school and coaching, prepare for the coaching one, provided that the school test is not related to boards.
If your school is lenient for attendance, then don’t be a full attendance person. But whenever you take a leave make sure you use it to the fullest. That day when you know you might not be able to do self study, go to school.
Give every test of coaching as if its your NEET paper. And every exam of school keeping in mind that it is NOT your boards. (Obviously except the REAL Boards).
Whenever you go to school pay special attention to English lectures. Yes! You read it right. Because you are not studying English properly and regularly, you need to cover up and this is a very sound way. Keep revising your 11th from time to time. At least a chapter from each subject each week. More if you can.
Give all the tests in coaching and attend their discussion as well. Your concepts clear and strenghten very much through those discussions. Moreover, you get new facts and shortcuts.

Brush up every single line from NCERT.
Practice as many previous year questions as you can.
For that confidence building, imagine yourself in your dream college everyday, but only for 5 mins at max.