Avalance

So my wife's finally got her interview set on May 10th. I have heard from few people in India say you need to submit few things to VFS no earlier then 10 days and no later then 7 days. I tried calling the Consulate for more information regarding this but its still no help i have yet to hear from them. I tried calling VFS also but they say we dont know. I have heard few different stories from India. One saying they didn't submit any documents via VFS. Another one stating they only sent DS-230 along with there medical examination results. If anyone could he me out with this questions it would be really lovely. Why would i need to send another DS-230 when NVC should have already sent them this. I mean in letter along with interview they asked for Marriage Certificate and Financial Evidence. Should i send this to Consulate via VFS along with medical results? Thanks for reading hope to hear from folks who have had there interviews already.

I was hoping that i would skip this step since i have sent in quiet a bit of information for this case to be passed easily. Oh well at best all i can do is wait till what the letter says exactly.

My status was changed to Request for Evidence. Should i be nervous? i mean filed it through a lawyer and i sent in evidence from marriage CD, CD filled with bunch of pictures of us, marriage certificate, pretty much everything maybe even little more then what they asked i think. So my status being upgraded to Request for evidence has gotten me nervous. All tho i did not send in any email chats stuff because i never met my wife till i saw her at a wedding. A week after that we got married and week after that i flew back to USA. All tho we stay in email contact as well as talk for 1-2 hours a day which i can get print out online from vonage.