If you qualify for the head of household filing status then you should wait until your original return has been processed and file an amended return. Follow the directions below when you are ready to do so.
https://ttlc.intuit.com/replies/3288565
Note: Once you prepare your amended return you will need to mail it. You cannot e-file an amended return.
You must have a qualifying dependent to file as head of household. Please view the TurboTax FAQ below to determine if you have a qualifying person for claiming the Head of household filing status.
https://ttlc.intuit.com/replies/4791157