Thank you so much for your support and advice. I went to the sleep class and, as I thought they would, they recommended CC. After talking about it with my husband, we have decided to try a modified version of this, as our bub is incredibly sensitive and would probably respond badly to a full blown version of CC right away. We have to ease him into it, so we are going to make sure we walk out of the room and only come back in when he gets to about a 'medium' grizzle (if you know what I mean) and soothe him by patting before walking out again. If this doesn't work and he gets hysterical, we will pick him up to calm him down, but then we will put him back when he's settled. We will try this for at least an hour each time, but if he isn't settling down (like last night) we will hold him for a while. I think when babies get to that crazy point, they don't even know what they're crying about, so CC wouldn't work as they wouldn't be learning anything. I really appreciate your help, and will let you know how things go after a week of this. Thank you all again.