I didn't get the chance to get on here and update everything. We had the interview on July 20th at the Salt Lake City office. Everything went well. I had brought a lot of documentation of our financial situation, thinking we might need more evidence proving my eligibility as a sponsor since I changed jobs during the pandemic and had to do a lot of scrambling in order to support us all while pregnant. The officer just asked me what I did for work but didn't ask to see evidence. We had our four-month-old baby with us, which is probably why he really didn't seem to question the validity of our relationship. He did say that he would have liked to see more overwhelming evidence of our cohabitation. I had a copy of our lease agreement, but he was not on my bank account at that time because my credit union requires a SSN and we hadn't received his yet. I do have him as a co-signer on a credit card, but when I tried to find documentation to show that, there was none available online that showed both of our names. He asked if we had the cards with us, but my husband didn't bring his wallet with him! I submitted family pictures of us and a copy of our son's birth cert. I was a little worried because I have not received the original back from his passport application, but the officer was fine with the copy. I also submitted evidence of all of us on the same insurance policy. When we originally filed, we didn't have insurance yet.
Overall, things went quickly. I've never seen my husband so nervous, it was cute. He basically just stuck to yes or no answers and all that was really asked of him was the legal stuff and the basics like when were we married, etc. The officer told us that he was most likely going to approve us but just had a couple of things to double check.
The best part was when we went to check in, the officer at the desk asked him, "Is this your sweetheart?" and my husband didn't quite hear him or maybe didn't understand the term "sweetheart" right away so the officer gave him a little bit of a hard time. "You're not just doing this for the green card are you? Because if you are, they'll find out in the back." Of course I just laughed, but he told me later it made him really nervous. You can understand how interrogators can really shake people up even if they haven't done anything wrong.
The status changed the next day and the card arrived less than a week after the interview. Hopefully those that are waiting are seeing things move along. We did contact our congressman through a form on his website and they were very helpful in getting things moving for us.
Good luck to everyone!
Edit to add that we had originally filed for a K-1 visa, but while he was visiting me the pandemic hit and the borders closed so we abandoned the K-1, eloped right away and applied to adjust status. The officer asked if he had come here just to get married, but was satisfied with our explanation and the timeline. While he was here, we were still taking steps to complete the K-1.