H4 travel and dropbox stamping without H1B applicant

[DavidAnto]

I'm currently in US on H4 Visa with my wife being the H1B. She had filed for our extension through her employer in March 2019 on and our visa expired on 1st June 2019.  On 22 June, I got my I797 H4 extension approval but it was only approved for 3months, till September and we assume her approval would come within 1-2 weeks through her employer.

Now in the current situation, she is planning to file another extension for both of us through her employer and in the mean time, I was planning to travel in the month of July to India and come back, because once she applies for the next extension I won't be able to travel unless the extension is again approved.

So I wanted to know whether I could get my H4 visa stamped via Dropbox without any issues, especially since she won't be traveling with me and getting her H1B stamped?

I would really appreciate feedback on this situation.