Dear Care and Feeding,My husband, “Doug,” and I are arguing over how to discipline our 6-year-old son, “Preston,” for taking off on his bike and not telling us. Preston received a new bike for his birthday last month, and on Sunday we couldn’t find him anywhere. His bike was missing, so we drove around and found him over two blocks away at a friend’s house. Of course you want to know where your 6-year-old is—make it clear that he can’t just take off without telling you. —NicoleMore Parenting Advice From SlateMy husband and I have a delightful, inquisitive 4-year-old daughter, “Bree,” who has a nut allergy.