I remember when my little terrorist started his sleep transitions... *sigh* ah fun times. The best thing I can suggest is just to try follow your little one's tired signs.. she'll let you know when she's tired, she'll get irritable, rubbing her eyes etc, i'm sure you've got her tired signs down pat.. that's what i did with DS, as soon as i saw him getting cranky, off to bed we go, bottle and dummy at hand :P and soon he just fell into his own pattern.. he's now almost 1 and 1st sleep is around 11am, second sleep around 4pm.. soon enough your DD will let you know what times she's ready to have a nap. Hope this helped!