Well initially I attended my interview and was told that my joint sponsor didn’t qualify so was refused base on public charge after that I submitteda new joint sponsor to overcome it I was refused again.my wife income wasn’t in good stand .i will advise you to get prepared they will call you to come over so know about your joint sponsor where he stays the work his doing his age and the distance between where you wife stays and your joint sponsor and also how can the sponsor you and ur wife