Perhaps the 3.15hr A time is a bit too long? Have you tried to scale back a bit a see what happens? I am wondering if that first nap is OT. My DD did a huge push in A times around 6 months, at one point she was doing 3.5hr, but now she's really scaled back for some reason and even getting to 3.15 is a challenge so sometimes we just do 3hrs.
