Yes, as Champ Digital_Bear_Jedi said, you can file an amended return to be independent. Send in the amended returns for the federal and the state via certified mail so you have proof of the mailing. Click the link for instructions: How to amend (change or correct) a return you already filed
To confirm you do not qualify as a dependent, check 2019 Publication 501 Dependents, Standard Deduction, and Filing Information on page 4 and page 11 to determine if you are or are not qualified to be a dependent as a qualifying child or as a qualifying relative.
In the meantime, you can visit the following links for the most recent updates:
IRS Coronavirus Tax Relief
TurboTax Corona Virus Tax Center Updates
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