Actually, come to think of it... I did this year (2023, for 2022 Returns) what you are suggesting: I built and e-filed both our IRS Individual Returns, but no State. Then I took my IRS Return which is much more complex, and brought my partner's information into it, i.e., changed to married, and added info and income, finalized the California Joint Return - and that's when the TT Software did not allow me what I had done last year, i.e., e-file the State but not IRS. Sorry, your idea does not work - as it's exactly what I did this year.
