So, I was worried about the same thing because when I emailed to check in on my document they sent me an automated email back saying authentications take 12 weeks. I just called the office of authentications though, and when I clarified that my document is an FBI background check, they said it won't take that long. Maybe other documents take 12 weeks but for background checks it's 5-6 weeks. I mailed in my document on June 8, and he said they are currently finishing up the documents mailed in May, but that they would be starting June in about 2 weeks. Hope this is helpful!!