Question on AMEND Tax Return

I filed my taxes on January 21st. It was accepted by the IRS and is still processing today 02/27/2025. I claimed a college credit and would receive a $1,000 credit/refund on the return that I filed. I have since then received a document from my college that needs to be filed with my return, and I will lose and should not recieve the $1,000 credit/refund.

My question is, should I file an AMEND to the return now while the IRS is still processing the wrong return or should I wait and file the AMEND return after they have processed the return with the refund? I should not be receiving the refund, it was a mistake and I want to correct it but I am uncertain on when to file the AMEND return.

Any help is appreciated.