Hey,

As your name only differs in the initial then I don't think it should impose aby problem. The problem arises only when your main name is wrong or wrongly written as it creates identity issues.

Still I will suggest you that you should clear this thing with the exam conducting body by contacting them on the helpline numbers available on their website.

I have attached the link of the contact us page of the testing agency below.

https://nta.ac.in/ContactUs

Refer to it.

Hope that helps.

Thank you