K.C.
yes...we have at times had all 4 of our kids in the same room. The older one's learn to block out the noise and sleep through it! Actually, our 2 year old at one point went and slept on the couch in a sleeping bag when the baby wouldn't sleep...or had to cry themselves to sleep. Its only a couple of nights to teach a baby to cry to sleep and they learn and go to sleep on their own. a two year old is very resilient and will just adjust and return to the way it was. Best wishes! and yes...after the baby gets back on track they all do fine together. It does work.
K.