ahhhh nap time

I feel like as soon as I get Angela's sleep schedule down it changes. I've been told I'm not alone in this. So about a month ago we started revolting against the morning nap. I tried to keep it up, but alas it was a battle not to be won. In reality it was obvious that her daily energy wasn't running out by 10 am anymore. She was up and energetic until at least noon. I would put her down at 10 and say I know you're not tired but lets try...well we tried. Now we are working on scheduling in one nap a day. I've heard that this transition brings many good things with it. We will have an easier time scheduling things. I will be able to be more strict about nap time since it is only one. Finally she should be sleeping 2-3 hours at a time. Well, I'm still waiting for this. I'm not sure how long the transition time should be, but we are on week 3 and I'm still not sure what she is up to. Do we nap at 11:30 or 1???? How do I keep her asleep. She naps for an hour and a half...like she use to and then is up. Well, by 5:30 she is cranky cranky cranky and I can tell she needed that extra half hour to hour. Today was one of those days I really needed a nap too and hardly got one due to the fact that she woke up. So now I'm not sure do I get her up at 2 and try to put her down again later??? Do i let her stay in her crib until we hit the two hour mark just to get her use to it? Any suggestions???