Elastictuba:
I came looking for that answer myself... From my understanding here on this thread (taking into concern your 2019 return has been filed and accepted and your desire to be immediately eligible for the covid stimulus ) filing an amended return, which cannot be E-filed but must be submitted on paper via US mail, will cause a substantial delay because the IRS is not currently accepting any paper returns at all due to the pandemic. However, since the stimulus is considered an advance on next year's taxes, those who don't qualify due to dependency status will qualify for the stimulus next year if filing as independently. I similarly am facing the same quandary. If as you say, no one will claim you despite the mistake, you might visit the Free File website also by TurboTax/Intuit and try filing as an independent. If it is accepted and processed and your stimulus comes this year, you have three years to submit a 1040X to correct the inconsistency.
