My LO is 12 mo and has been walking for two months now, but has been an exclusive walker for about two weeks. He only has a pair of Robeez that he wears outside, but I think we need to get him a second pair of shoes. Pedipeds look pretty structured, so I'm considering another pair of Robeez. How long did you keep your new walker in soft soled shoes? How long until they could wear structured shoes?