No you do not have to start a 2020 return. But to get the side menu to open up and give you access to your 2019 return, you will need to enter enough personal information into a 20
22
return. You do not have to finish preparing 2022 if you do not want to. And....if you are hoping to amend 2019 to get an additional refund, accomplish that by the April 18 deadline or it will be too late.