How to Efile 2021 with 2020 FED return has not been processed yet

I filed my 2020 Fed and State on Oct 17, 2021 by mail, CA state was processed quickly. Fed still has not processed, I called the IRS at 14 weeks, and they told me to expect it in another16 weeks, this puts my 2020 return mid May '22 and when I look to Efile, it says if the Adjusted income doesn't match, it may be rejected.

So what do I do to Efile this return?