E.S.
I didn't read the other posts, but just wanted to mention my problem with a 3 year old and a baby sharing a room.. it wasn't the waking up, my toddler would sleep through anything. My problem was my 2 1/2 year old picking up my newborn and bringing her to me. I had my newborn sleeping buckled in her carseat with the carseat in the crib and somehow my daughter managed to unbuckle her and get her out of there and bring her to me because she thought she was hungry. So now I have 4 kids (including a newborn) in really a 3 br house and the newborn is in a bassinet in my room for the time being because I don't trust anyone with her (they are now 5, 3, and 1 and still always trying to be "helpful")! From that day, I have always had my babies in separate rooms or in my room for their safety. Just something to think about.