Adjustment of Status - I-485

So today we had an interview. Our PD was July 31,2018 (brooklyn office) the interview was suppose to take place at federal plaza at 9.05 am we arrived there at 8.30 we checked in and they told us to wait down and wait to be called.
So after maybe half an hour we were called in. So we did the oath and he took our driver licenses as a form of Id. Then he took a picture of me and fingerprints. Asked my husband for naturalization document and mine passport that I entered us. After that He asked my husband my full name and date of birth where do I live, where do I work and for how long. Then he turned to me and asked me the same questions about my husband. We both answered correctly. He was discussing with my husband about his job etc I don't know how it was related but the io was super nice. After that he asked me yes or no questions from the i485 form. We had to changed 2 answers because we stated that I never was denied Visa to USA which I was but i was a child at that time and it was with my mother. The 2nd question we had to change was the one about violating immigration law on application said no but I actually did because I overatayed my visa. Then he moved to taxes. We actually have an issue with our last year tax return and we told him about it he kept a copy of our joint tax return for last year.Then he asked about pay stubs and joint assets so we have him ,bank statements, Bill's, car insurance, cc statements, con Edison Verizon bill. After that he said okay I think that's all. And I was in shock and asked him if he doesn't want to see our marriage certificate and other forms they ask to prepare. He said no. Then i aww asked him if he wants to se our photos and he said oh you have some. So I took out 3 albums one from the wedding 2nd was from beginning of your relationship till 2018 and 3rd was pictures from 2019. He asked how was our wedding and we told him our crazy story what happened on our wedding day he was laughing then we were talking about our Vegas trip and Disney trip. After that he said ok we are done. He said that usually it takes 120 days to review the case and receive the response but we provided more than enough evidence and he's approving us and my gc should come in a mail within 30 days. We said goodbye and left wishing him happy Halloween. I was stressing so much about it for nothing haha. The officer was really nice and we were joking and having relaxed conversation during the entire interview.