1040X will not work for this purpose.
1040X is ONLY for financial data.
There is no provision on the 1040X form to allow someone to change their "non-filer" STATUS to a "filer" STATUS.
The 1040X for can not be used for the purpose of changing a "filing status".
The IRS is not providing any guidance for this issue at the time of this post.
IF you OWE money.... why not wait and see if IRS guidance comes, or the IRS opens up their phone lines again to ask them. You have until June 15th 2020, so why not wait.
IF you are anticipating a financial RETURN from the IRS.... Send in the paper copy of your return. They will see the obvious. That you are not filing fraudulently as a second return and that you ARE a filer, (not a non-filer) as evidenced by the fact that they are now in possession of your return. Receipt of your financial return will likely take an additional few weeks to receive, but it'll be handled.
