I made mistakes on 2020 form Schedule E which will affect this years return . Do I need to file a corrected from for 2020. I used 1040 SR last year.

I will file  a correction when I finish this session if I can submit the corrections after that.  Line A12,20, 21,and 23c,and B18,21,23c,d,and 25 and 26 will change. I don't see form 4794 Long or short.  Help