Hi, HERE my timeline, September 2017 Dos was sent. December 2017 Non objection letter and FR letter was sent to Uscis. January 4 received 2 receipts from Uscis. One from California and other from Vermont. May 2 approval from Vermont, i called Uscis and turned out, this approval had the wrong alien number and my case is the one from California. August 10, received a letter from California case asking the copies of mine and my husbands passaports and all visas. August 13, They received evidence and no more updates. Yesterday They schedule my 485 interview for next month. I Will call and ask for an expedit because i am afraid They deny my case and i have to start again. They approved with wrong alien number. They opened 2 cases on my waiver.. everything is on my favor. I Just need a nice Officer to act on my interview.