Retirement tax questions

I did have a year 2020 Covid withdraw with taxes spread over 2020, 2021, and 2022.  This withdraw is not listed under 5a pensions and annuities but is added in for the 5b taxable amount.  This taxable amount was too large because I did not follow the instructions correctly.  I was looking at the 2021 entries which indicated form lines from 2020.  The instructions said to go to the 2021 form directly.  After I followed the instructions, the 5b taxable amount is now correct.  By the way, the form to report 2020 Covid withdraw is not available until March.  So problem solved for now.