If your wife's 1/22/2020 contribution was for 2019, she must file a 2019 Form 8606.
The $6,000 Roth IRA contribution that you made for 2020 and recharacterized to be a nondeductible traditional IRA contribution for 2020 goes on line 1 of your 2020 Form 8606. The amount that appears on line 14 of your 2020 Form 8606 will carry forward to your 2021 Form 8606 line 2 to be used in calculating the taxable amount of your Roth conversion that you performed in April 2021.
