You ar enot eligible for NEET Ug as students must have Biology/Biotechnology as mandatory subjects in 11th and 12th both.

In 12th you must have PCb as subject and English as compulsory subject. 

Secondly candidates should have two years regular continous study and gap vetween 11th and 12th not considered. 

Also you must hav eminimum 50%aggregate marks in 12th in PCB category 

There is no point in appearing 11th again and wasting precious years. 

You must now focus on Bsc Courses in Medical Stream which ar egood enough.. 

https://medicine.careers360.com/articles/neet-faqs

Hi there. 

According to the latest updates, for a general category student 50% aggregate marks in Class XII boards is required in Physics, Chemistry and Biology. 

Hence, you are eligible to write the NEET examinations if along with the above mentioned you fulfil the other eligibility criteria as well. 

For more relevant information on the same, kindly refer to the link mentioned below: 

https://www.google.co.in/amp/s/medicine.careers360.com/articles/neet-eligibility-criteria/amp

Wishing you luck!