GC is approved while being away from US on advance parole

[agh1234]

My spouse is the primary applicant for the employment based green card. I am a derivative applicant.

I have traveled to India on advance parole. While I am still in India, our GC got approved and my spouse has received both of our GCs.

My spouse is planning to visit India in 3-4 months and hand me over the green card. At that time we both are planning to return to US with the green card.

How long can I continue to stay in India safely without abandoning the green card status?

Thank you in advance for your reply!