Thank u for the prompt reply, she just started school this Sept, 4 days a week (Tue ~ Fri, morning half day) but her night crying issue has been more than 2 months, so don’t think it has anything to do with school. And no difference between school days and none school days, which means if she sleeps on the bus and skips the 2 hours noon nap, she is still happy & active for the rest of the day.
Talking about shortening her 2 hours noon nap to 1 hours, If late bed time is the reason, why did she still cry on those school days? on those days I tried to send her to bed earlier as she only had 20 mins nap on the bus.
There has been 2 days since I posted the thread, and they were quiet nights, no cry at all for some reason, except earlier morning wake up , 6:30. I will keep my eyes on it and come back with new observation, but hopefully I don’t have to come back with the same thread. LOL