Very similar situation here. Filed in early August as soon as my 90-day window opened, based on the 3 year rule (with a pending i751).
On November 1 my estimated case decision time went down to 4 months, yesterday I checked and it went up to 6 months.
I wasn’t exactly relying on this data since it looks like cases are being processed faster, but the number going up makes me wonder if we’re hitting a wall and the backlog has increased even more.
A lot of people in this thread already had their 10 year GC, which makes the process smoother, but I did see a few in similar situation having their interview scheduled before their 3 year anniversary…