ds is 3 is dry during the day and still in a nappy at night but quite a few times over the last few weeks he has woken up at xoclock in the night for me to discover he has pulled his willy out the top of the nappy and him and the bed are sodden! iv tried putting the nappy on as tight as i can and tucking his pj top into the bottoms but that dosnt really help and ideas before i get out the gaffa tape?!
I would take nappy away at night! It sounds like he might be ready! Do as MrsMacaroon says and take him to the toilet although my DS would never do this so we bought those disposable bed mats in case he did have an accident. Make a big fuss about him being a big boy and not needing a nappy, etc. Good luck!
This may be a sign that he is waking up and trying to get to the toilet in which case you could try pull ups, if he is trying to get to the loo then this will make it easier for him.
If he does become dry make it a celebration but don't keep on about the fact that he is a big boy and no longer has to wear babyish nappies because if he does start wetting again he will remember you telling him how nappies are for babies, and for him going back to them may make him feel like a baby even if he didn't before.