It’s finally time to ditch the diapers … but how? Which potty-training method is best? Do reward systems work? And how long will it all take? We’ve reached out to “been there, done that” moms for their best tips, and here’s what they had to say. 1. Sometimes you have to wait If your toddler isn’t showing clear signs of being ready, WAIT. That’s Brandy W.s No. 1 tip. She said: “Wait until they’re 3 years old.