Joshua basically self trained in the day time and was dry and in underpants at 22months. He just kept pulling his nappy off and running to the toilet and doing his business. I kept a nappy on him at night, and I think I just didnt let him try at night soon enough, I thought he wouldnt be ready and then thought he got lazy. he's 8 now and still wets every night, but its believed to be a hormone problem, very common especially in boys lol, and it typically runs in the family. I was wet at night until I was 9, my brother until he was 11, one of my other sisters was a wetter too and all 5 of my nieces/nephews wet at night and they range from 4yrs-12yrs. He has a paedatrician and hopefully he'll grow out of it, we tried lots of medications and Ive decided to give Joshua a 12 month break from them (with agreeance of his dr) it was making a big issue of it and he was getting self conscious so now we use pull ups and hopefully his body will just naturally kick start the hormone and get him dry at night.