DS will be 3 in Nov and DD is 18 months. He is intrigued by underwear and has asked for pull ups because his friends at school wear them. BUT he refuses to pee in the potty even though we sit on it every night. We read all the potty books and watch the Daniel Tiger episode and he's all agreeable until it's actually time to go. She has already peed in the potty more than he has, but I think she's a few months from ready. Maybe just do them together? Is that crazy? If anyone has done this I would love to hear your experience and tips!!