Hi Tushar,hope you are doing well. With regards to the question I want to mention that had you mentioned your +2 boards ,it would become easier to provide you with appropriate information. Considering your +2 board as CBSE , I want to mention that for improvement examination, only one chance in the succeeding year is permitted and the total number of attempts that a student gets to clear the exam is 3. I has been reduced from five to three. As per your question you have mentioned that you have failed in your 12th twice and then dropped one year ,so according to the data provided by you this is your last and final attempt or chance to clear the exam. Otherwise there is also an alternative option for clearing your 12th. You can take admission in NIOS or National Institute of Open Schooling currently NOS (National Open School). It is an education board under the Union Government of India and founded by MHRD. It is aimed to provide education to all segments of society with the motive to increase literacy and aimed forward for flexible learning in the society. The NIOS is a national board under MHRD that administers examinations for Secondary and Senior Secondary examinations exactly similar to the CBSE and the CISCE. It is quite a popular mode for schooling nowadays and its relatively easier than the above mentioned boards. Hence you can give it a shot. Hope this helps.

NIOS Official website link :- https://www.nios.ac.in/

Thanking you

Yours sincerely

Somenath Chattopadhyay