It took me about 7 months when I did it for my parents. October 15, 2019 to May 28, 2020.

Then almost another year from I-130 approval to embassy interview. they go their visas almost exactly a year after, on May 21, 2021

could you please tell me after you got approved from uscis how many days nvc sent you notification ? I got approved June 9 2021 I'm still waiting from nvc I don't know what's going on.