Dear Omkar, no matter how many corrections you have as long as the information you provide is correct, it is still good if you register once. Now this application form is online and not on a paper that you need to worry about the no. of corrections. All you are doing online is erasing and refilling the details. The application form doesn't get messy. Follow the steps in the website https://medicine.careers360.com/articles/aiims-mbbs-application-form and you are good to go. But if you want to reregister, you can do it. You need to reregister with a new email and phone no# and fill in a new application form all together.
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