We have been co-sleeping with our 3 year old. It's been in the back of our minds that he will have his own room at some stage, or a single bed in our room. We're going to be moving house in a month's time, so it might be a good time to put his name on a door and a bed in another room. It does make me feel as if he's being pushed out a little bit. He is very affectionate and does like to cuddle up saying 'mind me mum'.
I know I'm going to be shattered and have a baby feeding all night long. I am also concerned about the safety aspect of having a toddler there with a small baby.
I'd be interested to hear what others have done in our situation.