The simple answer is just get an ordinary B1 visa. And of course, you cancan stay for a week or two longer, to visit friends, see the grand canyonGrand Canyon, or whatever.
The basic problem you're facing is that you're trying to stretch a week to apparently "months".
The extremely short answer is unfortunately, it will never happen.
If India was a visa waiver country, it would be no problem, as you know.