Thanks JandM. Changing my wife's address to my permanent address is going to be a very tedious process at this point as both of us are not living in that city now although my permanent address still remains the family house. So I won't try that at the moment.
But ya, your links have been helpful. I have a medical insurance with her name as a dependent and since our son was born in Dec 2016, we have a few photos together, got to sift through them, but hopefully a photo showing my parents, her parents and both of us with our son. Such a photo will reveal a recent period in our marriage timeline and my parents and her parents together with us should show some family stability.
We had made a holiday trip to Sikkim in March 2016, have those air tickets and a few photos.
I will start a joint bank account with my wife right away as well.
Thanks again for the suggestions.