We are getting a few more longer naps sprinkled around the 45 minute naps. Yesterday he had 1 2hr nap and 2 40 minute naps. Then this morning he had an 1hr15min nap, and and then this afternoon he woke promptly at 35 minutes, so I'm guessing that naps was OT (however, I try and keep the A (2hr20ish min) the same, and it yields different results...why?). If he wakes before 3, I always try and squeeze in a CN, but sometimes they end around 5, which pushes our bedtime back slightly. How long is your sons A time? It appears that are only days apart in age (3/16 birthday). When he wakes in the morning, he usually stays awake around 2.25-2.5 and then if he takes a good morning nap I try going closer to the 2.5, but maybe it's too long. Are you struggling with the 40ish minute naps too?