Daylene and Sherry,
thanks for the advice. DD STTN last nite from 8:15pm to 6:20pm.

you were right about the A after the 30 min nap, dd yawned just 2.5hr into that A and had a 1.5 hr nap.
She woke at 3pm and BT was brought forward to 8:15pm instead of 9:15pm.
The thing is, she was quite cranky the last hr b4 her bed time, which is unusual, mayb last A was too long at 5hr 15min? I am nervous to bring BT even earlier considering her short nite sleep requirement. ( usually is 10 hr, lately it is been 9+ )
what do u think I should do? stretch the 1st A? extend 1st nap? stretch 2nd A? or bring BT forward?
Or I should just stick to this for a few days to see if dd can adapt to this new routine and see what happens?