Mistake number one,
you do not change his belly band..
the idea is for them to not like being wet, and learning that if I am not wet I do not have to wear this darn rotten thing around my body..try that for awhile, but it takes time..I used them on a boy that was not trained at all at 8 months old, all he did was the same thing, today two years later he goes outside..it took months, I got the wwwl.markout.com ones..I really did not think they would work, but they did..you just throw them in the washer and hang them up to dry...pooh's mum
It can be very annoying but just let him not like being wet. he will NOT get it.