After you file

I am 100% not able to be claimed as a dependent as I am 21 live on my own, and my parents have not claimed me as a dependent since I was 18. I went ahead and sent in an amended federal 1040x, so hopefully it will do the trick but I was told it can take 12-16 weeks to be accepted, so I may have to wait until next years tax season and hopefully get the stimulus check then.