I need to amend my 2019 tax form because I received some retirement paperwork after I filed. It will only let me do 2016 through 2018 how do I amend the 2019 tax return?

[mesquitebean]

At this point in time, it's too early to amend a 2019 return.  And you should wait for the original return to finish processing and wait on any Federal refund (if applicable) to arrive first before amending.

The Form 1040X will not be available in Online TurboTax until 2/05/2020.

The amended return must be printed, signed, dated, and mailed.  It cannot be efiled. 

Here are the instructions to use once the Form 1040X becomes available. 

FAQ:  How do I amend my 2019 Online TurboTax return?
https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577