See if you have uploaded the correct image correctly in time, then you have nothing to worry about. Now as you haven't get the confirmation, I understand you are anxious and tensed. First you shouldn't hamper your examination out of your tension. Secondly I would recommend you to connect to the NTA NEET helpline and get it discussed with the officials they will provide you procedures or the subjective information they have.

The contact details for NEET:

• neet@nta.ac.in (mailto:neet@nta.ac.in)
• 0120-6895200 (tel:0120-6895200)
• 011-40759000 (tel:011-40759000)

For NEET revision strategy you may visit the link below:

https://medicine.careers360.com/articles/revision-strategy-for-neet

I hope this answer helps. All the very best for your future endeavors!