Dear Aspirant,

Once after filling the JEE Mains form you can only make corrections in it till the correction window is opened.You van make no further corrections once after giving the exam or when the correction window is closed.So do not make the mistake of filling General EWS in advanced form or mismatch of information may cause a problem.But still if you need some information you can contact the NTA by email Id or contact number provided on their site.So best of luck.May you get a good score in JEE advanced.

You can also use the college predictor as follows-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer