Apologies for the late response. The journey from Lagos embassy was quite interesting, my interview was postponed three times. Anyway, we finally had the interview on 10th January 2024. It took more than a year from DQ to the final interview day.
The interview itself was for just about 2 minutes (for me, took longer for some). The officer simply asked where I was going to land in the US and that was it. All 9 of us that interviewed for EB visas that day were successful.
Landed in the US at the end of March, quite late at DFW and whole process was easy. Just have your intended address at hand.
The SSN number came in 2 weeks after landing, I didn't have to apply for it again after selecting it in the DS260 form. The actual greencard came in exactly 6 weeks after landing.
I opened checking account just with the SSN and entry stamp.
Good luck to all the people still waiting in Nigeria, the process is slow but you will all smile at the end.
Thanks to everyone who posts on online forums such as this, gave me confidence boost and references throughout the entire process. Filled the petition by myself using posts and guidelines from people online.