Kolby is 10 and Riley is now 6 (yikes) and, as of now, they still share a room. In fact, some of the time, Riley migrates to Kolby's bed during the night. I know that Kolby is getting to be the age where he is going to want his privacy and his own space. Should I wait to separate them until Kolby expresses a want to? Or separate now? Any BTDT Moms out there who have experienced this?