Harsh, the NEET application form correction window was open till 31 January and now the correction window is closed, so you would not be able to correct the name details at this moment. However, in your case, a small difference in name, should not create any problem in ideal situation as long as you have entered your details correctly and should not create any problem during the counselling process. However, the counselling process is dependent on the authorities and so, you can't afford to take any risks, so you should contact the NEET Helpdesk as soon as possible and make them aware of your situation. Also, the NTA has reopened the application form filling window but the candidates can only fill the application form, upload scanned images and pay the application fee in this window from February 3 to February 9 and there is no scope for any correction in this window, so it is better to contact the helpdesk and ask for any help.