Your basis from 2021 that will appear on line 2 of your 2022 Form 8606 is the $6,000 that appears on line 14 of your 2021 Form 8606. If you transfer in your 2021 tax file to begin your 2022 tax return in 2022 TurboTax, TurboTax should already show this amount on the page that asks for your basis.
If you convert all of your traditional IRA funds to Roth in 2022, the value of your traditional IRAs on December 31, 2022 will be zero. You won't have any outstanding rollovers or recharacterizations.
