H4 Stamping Interview(221g) along with H1 Dropbox - Chennai


I have submitted H1 Documents in dropbox for stamping as I was eligible, but my wife’s H4 stamping is not eligible for dropbox and hence had to appear for interview. But, during the interview, she got 221g blue slip asking for valid stamping for principal applicant in passport and have been advised not to appear for interview but to resubmit the documents in US Consulate. My H1 is issued and will be ready to pickup in few days. Hypothetically, if we resubmit H4 documents, say coming Monday (Oct 22), how long normally it will take to have H4 stamped and available for pick up. Does anyone have experience this kind of scenario before?