You cannot add 2021 income to your 2022 return. The Online version is only to prepare your 2022 return. To file your 2021 return you would need the Desktop software of TurboTax.
You can purchase the 2021 TurboTax software at the following link:
https://turbotax.intuit.com/personal-taxes/cd-download/
Your 2021 return would need to be printed, signed, & then mailed.
