Hi there.
i dont think 6.30 is bad been as he is going to bed at 7.30pm as thats 11 hrs overnight.its probably the short naps making him tired.
Regarding the nap at nursery,do they wake him after the hr or does he wake himself? i do think he needs to go to bed a bit earlier on nursery days,not only because of the shorter nap but because he will be a lot more physically tired.
Re the nap at home that seems a bit messed up too.Do you wake him at the hr or does he wake himself? id be inclined to push to 10.30/10.45 and see how it goes and hope for a decent nap.1.5 ish,then give a second nap for 30 mins and then he wont be so OT for his bedtime.so maybe:
6.30
10.30-12
4-430
8pm bedtime.The later betime might help his wake up.
what do you think?