Read these sections of my post again:
If you need to prepare a return for 2017, 2018, or 2019 you can purchase and download desktop software to do it, then print, sign, and mail the return(s)
https://turbotax.intuit.com/personal-taxes/past-years-products/
You may also want to explore purchasing the software from various retailers such as Amazon, Costco, Best Buy, Walmart, Sam’s, etc.
This link Where can I obtain authentic TurboTax software? has a list of authorized TurboTax resellers.
So you don't need to start over from scratch ... download the .taxfile from the online system now so you can open it in the downloaded program. ***you may need to start the 2020 return to have access to that section of the program.
