Dear Student,

In correction window where you can make changes.You don't need to worry because correction Window  will be available to you for March session in March month may be within a week.You can make necessary changes in form but you can not change exam center all other details will be editable you can change personal details including category but you may be able to upload valid EWS certificate.If you don't able to upload valid certificate you can show them at the counselling but you need to upload undertaking form which states that you will produce valid certificate at the time of counselling

You can download the undertaking from the official portal of NTA, for which link is also given below :-

https://jeemain.nta.nic.in/webinfo2021/File/GetFile?FileId=5&LangId=P

In this pdf on page 9,you can download undertaking form and fill it or upload it if you currently don't have valid ews certificate if you have then it will depend on the correction window that will you able to change it or not if not then you need to upload undertaking form

Make sure you update the correct details and then take print out of the form.For more information click below

https://engineering.careers360.com/articles/jee-main-application-form-correction/amp

You can also take help from officials regarding your query

Thanks