Naps?

I have begun to slowly change the babies' schedule. Our ultimate goal is to have them wake at 7, nap from 9-11:30, stay awake until 2:30 then nap until 5:30 and then stay awake until bedtime at 8:30. If they don't nap for the entire "nap time" that would be fine, I am just trying to move them to 2 naps a day, 2.5-3 hours. Right now they are on 2 naps a day, 1.5-2 hours each. I am slowly starting to take their noon nap away so we can move to the desired schedule. Their morning nap is the easiest to tweak by just letting them sleep longer. I hope this works....Last nite they went to bed at 9 and slept until 6:45 so that was close enough to our goal that I am calling it a success.