I'd be grateful for nanny opinions on whether this would be a reasonable set up. A friend and I currently have 18 month olds, at nursery. We are both pregnant and due a month apart, and live on the same street. Neither of us can afford two sets of nursery fees so are considering a nanny share. Would it be OK to ask a nanny to look after two one year olds and two three year olds? We'd hopefully have the three year olds in pre-school for half the day.