My 7 MO DS has just started pulling himself up and cruising. Up to now he's only worn socks (and booties when he was smaller). When should I start thinking about getting him some indoor shoes? It still seems pretty early, but the things I've read suggest that they need something a bit more protective on their feet when they start moving around upright. And if you think I should get some now- does anyone have any tips on what sort to go for? Thanks!