Adjustment of Status - I-485

Hello everyone Alhamdullilah for everything. I had done my interview today. it was really wonderful and very smooth. the IO was quite friendly. at the beginning he asked me couple of yes no questions and later he asked my wife couple of questions. the IO later check my all documents during last 5 years of my F1 status and he was pretty much happy about that. then he asked about joint documents. as I said before that I did not have enough joint documents . we had only medical insurance, and couple of bus tickets and photographs. after that he was look pretty happy and asked me that we are missing I-130A and he said we did not filled up this from when we apply for i130.later he said he gonna send us to instructions about how to fill up this form and when we have to submit this form to USCIS. and then he took my picture and tell me to sign in a paper. and later IO asked to us do u guyz have any questions, my wife asked him that when we come back again do u guyz take our interview again. the IO said No. your interview chapter is done. when u come again just submit the form we will approved your GC the IO said. and he we are good to go. that's all. we finished our interview within 25 minutes. now please do comment about my idea and tell what gonna happened now. how long will be take to come the next appointment date to submit this form. also what do u think about this case?