Hello, 

As per your requirement, i would say that as mentioned above as your mistake in filling up the omr sheet, your omr most probably will get chevked because mainly the omr code and your roll no. Is the most important factor. If thats mistaken, your omr will get rejected. 

But in the name filling case of your fathet, it will not be a big issue but still check the neet offiial website for your querry and contact them.

Good luck