My interview date is scheduled the moment my countdown clock went from approx 1 day to 0.
3-year rule Santa Ana FO with pending I-751
Applied: 10/14/23
Interview scheduled: 03/08/24
Interview date: 04/12/24
I called twice to inquire about the status of my case because we needed to travel soon. On the 2nd call operator had me on a 30-day call back notice form Tier 2 officer.
Thankfully 2 days later I got the interview notice, so I think Tier 1 officer did help me to push my case forward