Hello Aspirant,
See as per the information bulletin available on the official website of NTA for NEET UG 2022, the candidate must upload the impression of all fingerprints including two thumbs as well and if you have only uploaded thumb impressions then there might be some future complications during verification but now nothing can be done because correction window has also been closed.
Now what you can do is, just reach out to NTA regarding your issue they might help you with your issue.
I hope you got the point.
Good Luck!!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile