EM - Sounds like our day. We aren't that far into it, but S took her first nap after less than 2 hrs A time. I tried everything to keep her up and happy, but she was too fussy. We shall see how long this nap works. As for the 5 min naps, those are the worst. Both of my kids are good at that, 5-10 min, just enough to give them a boost and confuse you on when to put them down. With just 5 minutes, I would've probably tried after she was near her regular A time (like she hadn't napped at all). So if she can do 3 hours, but napped for 5 after 2 then I'd give it an hour and try around the usual time. Am I making sense at all?
For BT, I'd go early maybe even 5 or 5:30.