Hi all, I am no expert here by any means, but I wanted to reply to Rachael and Mukta that we have ridden out occasional weird patterns similar to what you describe...have you tried putting them down for their nap earlier and still limiting the length? If you can get them to fall asleep earlier in the day, then you have a bit more awake time before bed. My 2.5 year old gets into little OT early waking routines now and again, and she's usually making a learning leap, or just whatever, and it corrects after consecutive days of getting her down a bit earlier for nap, limiting the length of the nap (in our case 1 hour to 1:30 max)...and then keep them active in the afternoon to tire them out a bit. I don't know if that will help in your situation, but thought I'd suggest it...(I also think that short nights accumulate into OT, so then you do have to back off on the A times before naptime for that reason).
katemom