I filed in 2020 only to get my stimulus refund, I had earned income. I failed to check box stating I can be claimed on another's return. My brother who usually claims

{correction in info above...should read I had NO earned income} me for EIC had his return rejected.  I must now amend.  How do I amend (I filed electronically) and remove myself from my own return? My info is already in my original return.  I used Turbo Tax to file.