You can read above my timetable.
My case was granted in June 2020, and I'm still waiting for the green card, almost 90 days later. I was able to get an info pass appointment, and the officer wouldn't stamp my password ( I-551 stamp) USCIS is not easy to deal with, and be ready for a fight even after the case is granted. My recommendation is to set up an infoPass appointment with USCIS as soon as your case is granted; the same day, do not wait. By the way, the 4000 visas available are given throughout the entire year, not just October - April