Filing 2021 taxes without info from amended return?

Greetings,

 

I sent in an amended 2019 return in February and it has still not been processed and I can't get through to the IRS on the phone.  I know people are waiting 6+ months, but I was waiting on the amended return to be processed before filing my 2021 taxes.  The reason for the amendment to 2019 was that I carried back Section 1256 (contracts and straddles) losses.  If the amended return were to be rejected for some reason, then I'd want to carry some of those losses from 2020 to 2021 instead.  I was also under the impression that the IRS sends a form (when you submit an amended return) that is to be used in filing following returns.  At this rate it doesn't seem like the amended return is going to be processed in time for the mid-October deadline for filing delayed 2021 taxes.  Should I go ahead and file 2021 taxes assuming my 2019 amended return will be accepted as-is or should I keep trying to reach the IRS?

Thanks for any help