He went happily to bed but has been awake tossing and turning since 10:30 and it's now 02:40. I can tell from his eyes that he is exhausted. I have tried hot drink and biscuit and music with no success. This is not the first time this has happened and I expect he will continue like this for another 1 - 2 hours then fall asleep. which gives me the problem of when to wake him up in the morning. If I leave him to sleep until 10 or 11 we will repeat this tomorrow night ( or is that tonight ! :/ ) The only positive thing is I have done some ironing while he chats.