We finalized in FL for one of our babies and it went beyond the 90 day limit. In fact, it took 7 or 8 months before we went to court via the phone. (I didn't even realize there was a 90 day possibility until just recently.)
Looking back, it might have been that long because our state requires the time limit of 4-6months before finalization. But even THAT was extended! (We've never had a finalization that happened within the 'expected time'; and it wasn't because anyone contested the adoption or anything like that.)
Good luck. Hope yours happens quickly.
Sincerely,
Linny