you can use TurboTax to prepare the correct tax return
compare the printout of the two returns original vs correct
find the pages with Attachment Sequence No. that are new or changed.
Attach those to Form 1040-X
you can get Form 1040-X in editable PDF from the IRS website.
Do not include your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.