I have been using N75 for about 4 weeks now with my 21 month old son. The first two and a half weeks were excruciating. We finally decided to just let him go fully naked (no underwear) and immediately things started getting better. This past week we only had about 4 accidents all week (all BMs)!! He no longer needs the bell, or the gate. We have moved the potty to the bathroom and he goes in when he needs to go. Now we are trying to get him to wear underwear so we can rejoin the real world. As soon as I put underwear on him, the accidents start all over again. He peed twice in his underwear today, when he hasn't had a wet accident in a week. What should we do?