I would google some things on it.

for starters CC isn't recommended under 6 months..

I understand your DP thinks it is the right way to go but in my opinion you are the primary care giver so thikngs have to go a little the way you want it kwim?

I don't agree with CC. i have done it once.. I will never ever do it again... I have sat next to their cots/beds while they have cried and reassured them I am there for them but it is bed time..

MY DH and I had a chat about this the other night in fact, Olivia who is just over a week younger then your DD was fussy and he said maybe we should let her have a little cry and I said no I don't think that is the way to go and then I explained it to him. I said if you tend to baby they remain calmer but if I am busy with the boys I do have to let her have a little squawk.

I guess what I am trying to say is that children who are seen to quickly (where possible) are calmer babies and know there mum and dad are always there for them..

I hope your DP can see this and realize your Daughter is still so young and crying is her only way of communicating