Advance Parole

Hello my husband and I were married in June 2020, I am an American citizen and my husband is here on his OPT. We applied for the change of status and the advance parole all together in August 2020. Our paperwork is showing to be at the National Benefits Center. It is showing that applications submitted in June had a 5.5 to 7.5 timelines for the advance parole. We are now at 5.5 months and looking to find more information. My husband has a family member who has been struggling with health and he is trying to see them asap. We have not heard anything about our application. What is the processes after submitting? Should we be seeing something before he get his advance parole to travel ? Does anyone else have a timeline similar to us or advice for us.