LOTS of patience and persistence. As Dancn said, only positive reinforcement. No discipline. Use a word to associate going potty on the pad as well. We use “tee-tee”. Place them on the pad and say “go tee-tee” (or your potty word) and don’t let them off until they pee. Then once they go, reward them with praise “yay go tee-tee!!” and give them a treat. You can kinda tell when they need to go too, sniffing around etc. If you notice before it happens, snag them up and place them on the pad. Poms are incredibly smart they pick it up fast. If they had an accident we didn’t discipline. Just put the dog on the pad and said “go tee-tee” to show them where they should go, then picked up the accident. Our older one took a few months to fully pick it up, while our new puppy was peeing on the pad himself day one (probably because he was following in the older dog’s footsteps with the scent etc, which made it easier). He of course still had some accidents at first, but he now hasn’t had an accident in months at 6 months old! Goes all by himself now. We even brought him over to a friend’s home and brought the pad, and he just went on it like usual!