Question on the duration of two minor milestones

[LHEtoNYC 4]

Hi all, and salaams!

First of all, thank you all for sharing your great stories...those of you that spend your personal time to help others out with your advice and experience is truly noble and I hope to do the same with my wife and my experience also.

Very obscure question, couldn't find answers for this, and I'll probably pose it to the wider IR1/CR1 if the response isn't specifically relevant to Pakistani beneficiary cases (I thought maybe it takes longer for documents to get reviewed at the NVC for Pakistani beneficiaries due to the nature/reputation of...well...Pakistan! lol) (no offense! I travel to Pakistan all the time and my parents were born there so I'm well aware of the immigration challenges inherent for Pakistanis).

Question:

Assuming you checked the CEAC website every day, how long did it take for that "PAID" status to turn "N/A" for the AOS and IV fees, from the date of your last confirmed step? The reason I say "date of your last confirmed step" is because we all had varying orders of doing things; I sent my AOS and IV supporting documents last; while others might have sent them first, etc.

I would like to know (1) how long it took to see that online status change, and (2) how long between that status change date and the interview letter?

Thanks in advance for your help!