Having taught kindergarten for 10 years one thing I learned was just when you think you've figured it out... it all changes. Well the same is true for raising children.
I have a 13 month old son, Blake, and during those 13 months I've come to realize that there is no such thing as a set schedule for a toddler! To give you a good example for a long time he would wake up at 6:30, go down for a nap around 8:30, sleep for 2-3 hours (yes that was a blessing!). When he woke up we'd have lunch, play for a bit then around 1:30/2:00 he'd be ready for another 1-2 hour nap. He'd then be good to go until around 7:30pm. All was good... we had a schedule we had a plan...
Guess he changed his mind. At first he tried out the whole 1 nap thing, but I guess he decided he missed having a morning nap. So that went out the window. And, he went back to taking 2 naps. But, now he's decided that 5:15am sounds like a great time to wake up in the morning... and we'd like to go to bed around 7pm. All well and good if you go to bed at 7pm, but what about mommy who doesn't go to bed at 7pm... 5:15 is veryyyy early!
Oh well... we will see what change comes about next!