How do I go back to correct an error when I am being told I am ready to file?

[isabel1a67]

I incorrectly filled in the tax payments by quarter on Form 2210 & need to make the corrections, but when I logged back in to my return, I was at the filing stage & cannot get back to the actual return.  Also, I paid estimated taxes for the first time in 2018 and do not know where I indicate that and it doesn't seem to be figured into the amount of federal taxes I still owere.

[JulieR]

To get back into your return, see the following 

1.      In TurboTax Online, sign into your account. 

2.      Select Tax Home in the left menu. 

3.      Scroll down to Your tax returns & documents. 

4.      Select 2018, and then select Add a State (you're not actually adding a state, this just opens the return back up) 

5.      Make changes  

You'll enter the estimated tax payments you made by typing "estimated tax payments" into the search box and clicking on the "Jump to" link in the search results.