Yes ,you should do as your step Dad wishes ,and wear diapers.There are many boys your age who still need to wear them ,and if you wet the bed ,then you should want too.Its better than a wet bed in the morning.Diapers are not just for babys ,so I hope you haven't started believing that lie.Maybe you could ask him to let you try a bigger diaper or else Goodnites.They are like underwear that you can pee in.Good luck