To be honest I didnt find having #3 to be a big change. There were a couple of things though, like more washing and I was a lot more tired than I was with the first two - mainly from having to get up during the night not only to Matilda, but also to the other two for various reasons. Also shopping with the 3 of them is not fun! But overall Matilda just slotted in and of course we wouldn't change a thing. Now we are thinking about #4!