So baby A managed that A time on such a short nap? That's amazing.
Ok, yep that CN probably definitely has to go now I suppose. Especially if they're both staying up so long at BT.
I would try as hard as you can to keep him awake whilst feeding. I know it's tough. Perhaps, yes, bring it earlier too and see if both make a difference. Falling that, if he does start to nod off towards the end, keep him up a tad longer by doing something low-key like a nappy change or something.
I can't imagine baby A is OT even with that silly 30mims nap that is sometimes indicative of an OT nap? Especially as he can then do 4hrs A after a short nap and that produces a long nap?!
I'm thinking if we just stretch both those A's a little more, that should get you near to a 12-hr day. It's just so difficult during these transitions. Especially when you have 2 grumpy bubbas on your hands, I would've put them to bed too!!
So how about trying closer to 3hrs A (pd for nap) as that's when they're ready to sleep anyway? It's showing that a change of scenery is giving them the second wind and then they're just playing around which is just so frustrating for you.
If the naps are crappy tomorrow and they really are grumpy, you could do a quick 15mins CN, but tbh you're so close to just getting them down to two naps. And I think it'll be much nicer for you if they actually went to sleep closer to 6.30pm than 9.30pm.
I know a 6pm ish BT seems early, but it might be worth a go considering they were ready to sleep at CN time yk? I know the idea of a possible 5am wu seems horrendous, but some LO's do tack on the sleep and sleep 12-hr nights during transitions. It's only once it stabilises that they start to be able to push out the A times a little more and BT can then be a bit later. Wdyt? Worth a go for a day or two? Xx