Hi Vaja !

According to your form, you fall in general category. For general category , the minimum percentage required for qualifying NEET is 50%. NTA provides chance for correction of details , you could have done that. But since you missed it, there is no chance to correct ypur category in the form. You can contact their helpdesk for direct support. Their officials can help you and guide you for the correction.

Here is the link to official help desk no. for NEET 2019

https://ntaneet.nic.in/Ntaneet/contact.aspx

You can write to them explaining your mistake and request them to change. Only they can change it or help you with further process.

Hope it helps!

Check out the following website for eligibility criteria:

https://medicine.careers360.com/articles/neet-eligibility-criteria