P.R.
Well you may not like this but if I had another bedroom to put my younger son in I would have in a hear beat!!!!!!! My older son was 2 1/2 when my other son was born. I didn't put them in together until the baby was sleeping through the night (4 months or so). The bedroom that they are in is the master bedroom with a loft. The baby is up in the loft. The main issue that has been the hardest is when my older son wakes up in the morning he is up at 5:30-6:00. I try to tell him to go back to bed but with him going back and forth from my bedroom to his sometimes wakes up the baby. It drives me crazy!!!
Also, if the baby (who is a year now) wakes up for some reason at night it will wake my older son and he will come in bed with us until the baby is asleep again. If the baby wakes up before my older son the morning then they are both up for the day. If I only had an extra bedroom!!!!!!!!