yes, you can fill the form and our advice is that this time pull up your socks, do not fear examinations but give your 100%.

try to do hard work throughout the year and get your concepts clear. do read NCERT books thoroughly and make sure you do not leave any unit, make sure you cover the entire syllabus. best of luck champ!

Dear Student,
Sorry to say but you can't anymore give 12 board exam because you have attempted it three times already.
According to CBSE norms one student can apply for
class 12  board exam almost three times.
I'm wondering how did you fail three times in class 12 board?
Are you unable to understand the concepts or anything else?
Don't get disheartened.
Move forward in your life.
Sorry to say, but you can't fill the 12th examination form anymore.

CONCLUSION: Better persue diploma for a branch that you like. Do hard work. After doing your diploma successfully, then persue B.tech with the same branch for gaining more experience in the field. After B.tech you can do job or even go for higher studies.
That's life has several ups and downs but you have to move on.


ALL THE BEST FOR YOUR FUTURE.