US Immigration from Philippines

Hey VJ, I did searches on Google and on the forums to see if this question was already answered, but I still have a tiny shred of doubt, so I'm posting this question.

Life happened, my flights back home got cancelled, my country's government seems to have gone completely insane, and my foreign employer says I can't telework from the US. So I'm now married and adjusting status from my B2 visa. I'm putting together our AOS packet and I fully understand that I need a certified copy of our marriage certificate.

When we went to get our marriage license at the county clerk's office, the staff explained to us that, in Shelby County, Tennessee, the marriage license and marriage certificate are a single document (sample below), and that this simply needed to be signed, dated and filed by our wedding officiant. It already says Certified Copy (yellow highlight below).

The staff explained to us that the document below is what I need as proof of my marriage, for anything immigration related. The Shelby County website indicates the same thing: "Newly married couples should present the Marriage License - Certified Copy as proof of their marriage for legal documents, name changes, etc." I already have the original document with wet ink signature from our wedding officiant. I included scans in our AOS packet.

To put my mind 100% at rest, is this document acceptable to send with our AOS packet? It would be such a shame for my AOS package to be rejected if I didn't include the correct document to prove my marriage.

My wife and son came in September on IR1 visas and have their green cards and ssns. The cards are valid for 10 years. To the best of my understanding my wife doesnt need to do anything until she applies for citizenship in 3 years. Is that correct? Or is their something we need to do before then?

Hi guys.Is there anybody who applied N400 last February 2020..My estimation to complete my case is on May 2021.Is there anybody to get their interview date?

We sent in our I-751 in on the 3rd of March. Tracking shows it was received within the 90 days.

It's now been 22 days with no response, which seems ok, but also they have not cased our check. How long is the normal timeframe and at how many days should I start trying to follow-up?

Thanks

If you meet the income requirements, is it fine to list your gross income and provide a tax return transcript and leave the other fields (bonds, real estate, life insurance) blank?