Since he's already fully transitioned to STTN in his BBB with no difficulty whatsoever, it seems backward to move him back to the crib at night. On the other hand, there's not room for both the BBB and a second crib. So I guess I would have to. I would just take out his big bed and put the extra crib in his new room where the bed is now.
We can try taking down and removing the crib this weekend and see if it helps. I think I'd like to give it another week, since night time has gone so well, though in another week I'll be 37 weeks along. Baby 1 didn't come until 40.5 weeks, so hopefully the same for this LO! Anyway, my mom is going to stay with us for 4-6 weeks after the baby is born, so if he's still struggling, there will be someone who can still devote time to getting him to sleep without worrying about the baby. Definitely not ideal, though, especially considering how easy naps were in the crib. (Walk into the room, set him down, come back in 2-3 hours!)
Creations, when I'm trying to be consistent with keeping him in the room, how long do I keep at it for? If he hasn't napped after one hour? Two hours? If he's playing, do I just sit there for an hour and watch him play? If I return him to his bed, he thinks it's a hilarious game. Should I try leaving the room, assuming it doesn't upset him? Yesterday he fell asleep on the floor as soon as I left the room.