IRS is way behind on all tax returns, that includes Form 1040 and Form 1040-X.
It is always recommended to wait for your original return to be processed before you amend.
Then you will know exactly what IRS did.
If you are very familiar with Form 1040-X, use your own judgement on whether to wait or not.
expect to wait 16 weeks for an amendment to go through even in normal times.
