My nanny has just requested that we purchase a baby carrier so she can carry our now 8 month old on her back while our almost 3 year old sleeps inhis pram whilst they are out... Personally, I don't think she really wants to carry such a carrier around with her on public transport. But,I said I'd consider it.
So, has anyone done this? A 9-12 month old on your back whilst you push an older one in a pram? Has it worked out? For the carrier, do you need one with a metal phrame, or is there a soft construction variety for this age group?