hello,

yes ypu can make any changes you want to make in your appliocation form under the guidlines here is the dates for the correction

Correction in particulars of Application Form on website only (No corrections shall be allowed under any circumstances after this date) 

14.01.2019 to 31.01.2019 

Yes, You can Do correction as Mentioned In the NEET important Points.

I will quote here What Point No ix says:

"Ensure that correct data is submitted in the online application. Any correction pertaining to the photograph and signature of the candidate will be intimated through e-mail/SMS and the same will be available in the candidate’s login account. Other permissible corrections can also be carried through log-in account only during schedule fixed for the same. Candidates may ensure clear photograph and signatures are uploaded. Thereafter, no request for correction(s) will be entertained except when the window for correction in all fields open."

Source:

https://ntaneet.nic.in/Ntaneet/importantpoints.pdf