Perhaps you can discuss with DH his concerns. Is he worried about SIDS? The risk decreases significantly by the time bub reaches 6 months. Can you come to an agreement that Jack goes into his own room, and you use a monitor for peace of mind? Or, how about suggesting a trial period of one week. If, after the week is over DH still wants him in your room, you might have to think of something else. Good luck. I'm sure your DH knows that there will always be something to worry about when it comes to having kids :-)