Hi vandana,

If you are pointing towards NEET phase 2 registration then you will have to follow what you filled in the first phase form because its just one form divided into two.

If you filled obc ncl as your category in the previous form then fill the same and upload the document according to the guidelines they have given if any.

Changing the category without taking consent from the authorities would be risky as your result which will be released after phase 2 is over might reflect the category you filled previously!. NEET results have category and category rank mentioned clearly. If you don't have document supporting that claim during your counselling it might pose a problem.

If this was not your query let me know.

Hope this helps!