DD is fifteen months (last week). She is quite big but can’t walk yet. I was told when joining the nursery that she would be in a room for 8-9 months to 16-18 month olds, depending on her physical development. Every day I have collected her in the last 2 weeks she has been in the room up which is 16-18 months to 24 months. AIBU to think this is wrong? She is still crawling around two years olds above her?