Off the top of my head (not thinking clearly - now that I heard Paddy's pal drowned in beer), I believe the tax on the qualified COVID retirement distributions had to be spread over three years, unless an election was made.  I never researched on the due date for the election.  You may want to check it out before you look further into amending. 

If you decided to amend, just use ACME and skip the first two amended returns. @IRonMaN represented the 3rd one is free.