On Feb 18, I accessed my online account and learned that they already have scheduled my biometrics. On Feb 20, I received the Form I-797 on Biometrics Appointment with March 8 as the schedule.
Feb 7 – mailed my application docs via USPS (with tracking #)
Feb 14 – Received the first I-797 Notice Of Action (dated Feb 12 by USCIS) Acknowledgment that they received my application)
Feb 16 – I received another Form I-797 through my online account with guidance on how to access my case online
Feb 20 – Through my online account, I received Form I-797 (dated by USCIS as Feb 17) for Biometrics Appointment on March 8.