If I amended my return through TurboTax, but don't mail the amendment, will IRS process my original in 21 days, so that I can get the bulk of my refund sooner?

I made a mistake due to a miscommunication with Fidelis and said that I was without coverage for three months in 2017 but I found a letter from NYSoH saying I was covered for the whole year. If I don't send in my amended return will I get the original in the normal 3 week time frame and then the extra in the estimated 12 weeks after I mail in the amendment or will the IRS be waiting on my mailed in amendment since I already amended through turbotax? I know there's no efile but I don't know if they send a notification or something.