Code 02 is for those Candidates who have completed their 12th. And your NEET code is what you fill in based on your qualification at the time of filling the NEET application form. So even now because you haven't yet joined any Degree, your highest educational qualification remains 12th and so the code will remain 02. Now the delay in conducting NEET is due to the Pandemic and so you cannot be held responsible if NEET has been delayed and you joined Graduation. You will not be held accountable for that. So do not worry about it. Should you qualify in NEET and secure admission in MBBS, provided you have all the documents required for Counselling, you should not face any problems during Counselling and admission. Do not worry about that. And if you are preparing for NEET, you may as well try our NEET Knockout package: https://learn.careers360.com/knockout-neet-may/ . And because you have just 36 days to prepare for NEET, you may as well use this opportunity.