As I told you, Abbie is also like that last week. She woke up at 4am - 4:30am. She was very energetic and she could not go back to sleep until we played with her for 1-1.5 hours.
I wonder if she is so excited in day time. For this week, I let her sleep at about 10:30pm (an hour later than usual), the situation was improved. She could sleep until 9am.
Actually, it is better to let her sleep at 9:00pm and wake up at 7:30am so that she would be used to the school time-table later. However, Abbie Ba and I work until very late in the office. That's why Abbie could not sleep earlier. Poor Abbie....