Getting my 3 year old son to stay dry in the night!?

My son has been toilet trained for about a year and a bit, with no trouble. He doesnt have any accidents at all. I decided to try leaving his nappy off in the night last week and he was dry all night for 2 nights. The last 3 nights he wet, but doesnt wake up. Its only when I go and check on him I find him... show more My son has been toilet trained for about a year and a bit, with no trouble. He doesnt have any accidents at all. I decided to try leaving his nappy off in the night last week and he was dry all night for 2 nights. The last 3 nights he wet, but doesnt wake up. Its only when I go and check on him I find him wet.

This is my main concern. Because he doesn't wake up does this mean he is not ready and should leave it a little longer and then try again, or leave him with no nappy?
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