Re: 4 day old won't latch
My LO had/has a hard time latching on and screams/pulls off when we nurse often. It was so terrible at first I was in tears, and ended up supplementing with EBM bottles.
Now he's 3.5 weeks and seriously it is so much better. I experimented around with positions, he prefers football or laying down which were the two that my LC didn't help me with! He still hates cradle/cross cradle but every day we practice them and he's improving.
As the screaming, well I can't exactly say why my baby does it while we feed but he does. I think in his case its because he has to either pass gas, poop, or burp and from what everyone keeps telling me this too will eventually get better. I also learned that he has one cry during nursing that means he wants me to switch him over to the other breast. (I have one that makes more milk and has a harder flow which he prefers!)
Tell your cousin to stick with it and it will certainly get MUCH easier!!!!!