I am US green card holder. I was in US last year, 2021. I had applied for reentry permit in June 2021 (Form I-131, Application for Travel Document) that allows one to stay outside US for upto 2 years. I had applied for it before leaving US last year. I got the application receipt and also biometric was waived. I left US after that around 29th July 2021. I am still abroad and the case status is still pending. I am about to complete 1 year. Should I go back to US just to maintain my green card validity? Or I need not travel to US, since the reentry permit will likely get approved soon.