keira, definately agree with all the others, even if you do decide to use CC your DD is way too young to even attempt it. a good book if you wat to compromise with DP is "the baby whisperer" by tracey hogg, she has some great ways to help your baby sleep without the use of controlled crying( at least up until 6months)and she also talk about "breaking the bond of trust", in other words if you leave a child that young to cry, they will start to think you wont be there for them when they need you. you do know best and i'm sure your doing a great job your way, and i really hope DP comes round to the right way of thinking soon!!