Hello Pravina,

The details which you have entered while registering for NEET UG 2020 will be auto generated when you fill application form so you cannot change them now. However, you can change the details when the correction window is activated which will be opened from 15th January,2020 to 31st January, 2020. You need to pay additional fee for changing the category. But as you have not submitted the application you can register once again using a new mail Id and phone number. Kindly be careful while filling the application form. You can refer the article which has guidelines for filling application form by using the link below

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-application-form/amp

Kindly once confirm if your query is regarding NEET UG 2020 or not.