I have twin boys aged 4.5 who started school in September. Got them into a routine of going to sleep by 8pm every night and they were sleeping right through for 11/11.5 hours. However since shortly after xmas DT2 has started waking really early, ie 5/6pm and the number of hours he gets varies from 9 to 11 hours per night, probably only 11 about once or twice a week, the average in the week being about 10. He seems to wake naturally each morning and there is no way he will go back to sleep. However he is really tired after school when he only gets 9/10 hours sleep and the teacher has mentioned that he gets tired also. I am putting him to bed as early as possible given that I get home at 6.30pm and he generally falls asleep within 10 to 15 minutes. At the weekend when I am putting him to bed about an hour later he is still waking early. I know he is not hugely sleep deprived but I just think he is not getting quite enough and what with being the youngest in the class with not the greatest attention span to begin with I am concerned , I am not getting any sleep either, worrying about him waking up. Just wondering how much sleep your school going 4 year olds get and whether it varies from night to night and what you think about the amount my DT is getting. Any suggestions would be welcome