Adjustment of Status - I-485

I got an interview in April 27th 2016 in Minnesota and have not heard any decision yet. The interview went pretty well and the IO said she is just waiting for my official i130 document sent to their office and then she can make the decision .She even printed out the instruction for me how to remove condition if I received a 2 years green card. My wife sponsored me as a F2A so I think my i130 application is at the national visa center because I did not file the AOS until November 2015 (a year after when I first filed i130) but I don't know why it takes that long. I made 2 inquiries and have not got any response yet. The USCIS customer service keeps telling me to wait since my case is not out of processing time yet according to their processing time chart. I know that chart is not accurate at all. I want to make an infopass but there is no reason option for me to choose from my case. Can I just choose any reason to have an appointment scheduled.