According to the NEET 2019 qualification codes, for an graduate student, you should not have anything less than 2 subjects from the lot of Physics, Chemistry, Biology (Botany, Zoology)/Bio technology. And you should have also had Physics, Chemistry, Biology and English as your subjects. Am sure, your +2 subjects must have had the required subjects. In such case you have to appear for NEET on the basis of your +2 qualification. 

Code 2 is for a candidate who has completed their qualifying examination that is equivalent to +2  in your case with subjects like Physics, Chemistry and Biology/Biotechnology.

But of your B.Sc degree has subjects like Physics, Chemistry, Biology/Biotechnology, then the code changes. Do let me know your subjects in B.Sc are any among Physics, Chemistry, Biology/Biotechnology please. 

Good luck!