Aishwarya ;

You can change your 10th marks certificate during the correction window if NEET authority notifies you to do so through your email id and registered phone number.

If they find anything wrong with your provided mark sheet they'll notify you to change that. Than only you can change the scanned photo copy detail of your certificates that you've provided earlier. So, wait for it. If you're sure you've provided wrong details, than they'll surely notify you to rectify the mistake.

So, I'd suggest you to wait for correction window to begin which will start from 15th of January and continues up until 31st of the same month.