There is nothing you can do right now ... you have technically filed a 2019 return so it is unknown if that will be used to determine the stimulus payment or not ... there is no information on such things and I doubt the IRS even knows ... they are punting right now and making things up as they go.
What you WILL need to do is file an amended return since you messed up in your haste to get the stimulus check and filed a 2019 return ... not sure how you possibly missed the 4 separate screens yelling at you to not file this if you needed to file a real 2019 return. Expect the IRS to take 4 months or more to process that amendment after you MAIL it in.
Unfortunately, if you accidentally submitted the non-filer form but you really need to file a 2019 tax return you will not be able to file your 2019 tax return electronically.
Also, you will need to file Form 1040X, rather than Form 1040.
The non-filer submission was intended for taxpayers who truly did not need to submit a tax return for the tax year, and as such it created a very simple tax return submitting a $0 tax return. This is true whether you originated your submission from the TurboTax site or the IRS site.
This means that you now have a tax return on file with the IRS, and to submit your true return, you will need to amend it by mail using Form 1040X.
To file an amended return, as a best practice, I recommend that you first obtain a copy of your IRS transcript here: IRS Transcripts to verify that your return contains only the 0s.
Your transcript should be available approximately 4-6 weeks after you submitted your non-filer submission.
Once you have this information, you can then prepare your amended tax return. If you used the TurboTax site to submit your return, you will be able to use your TurboTax account that you created to work through your amended return.
If you used the IRS site, using our downloaded software will provide a better amendment experience as it is easier to create the original return necessary prior to creating the amended return. You can purchase that software here: TurboTax Download Software.
For more complete information on how to amend a tax return please see this article: How to File an Amended Tax Return.
