Our extension was accepted. I had the wrong info for total tax liability and put it on the wrong line, I also had the amount I was paying on line 1. How do I fix?

[us3]

Used 4868 (2018) and hit send to soon.

[tygrtchr]

After your return has been processed by the IRS, you may file an amended return with the correct information.

[us3]

I submitted an extension, not the return.  The extension was accepted and I want to redo and fix if necessary.