Hi Jen, I subscribe to another kind of sleep theory. When my #1 was born, I was quite adament about "sleep training" through a book called baby whisperer. Basically - work according to a 3 hour schedule - which includes feeding, activity, sleeping. Was also told not to carry them/ rock them to sleep, just leave them in the cot, pat them when they cry, and put them down before they are totally asleep. Feed only every 3 hours and not on demand.
Result?: DISASTER.
Baby cried until he looked like he was in shock, even my confinement lady was trying not to say I was very cruel. It went against all my instincts to continue to try this method. Thankfully my supply did not drop even though I was schedule feeding him.
Then I read about peaceful parenting. In this theory - babies CANNOT BE SPOILT if they are less than 6 months: they only have needs, not wants. And since they cannot communicate by words, the only way they can express their frustration is through crying. I also learnt that babies at this age seldom can 'fall asleep' on their own - they need to learn to self-soothe and that's why need us to pat them to sleep. When they are ready they will sleep on their own. There is also no harm, and no such thing as carrying them "too much". After all they were snug in your womb for so long so they crave to be in mommy's arms to feel secure and nested. Feeding is not their only need, physical touch is too.
Anyway for more reading you can try this:
http://www.askdrsears.com/topics/attachment-parenting/7-benefits-ap
After I changed my 'methods', I had a much better time with my son during my maternity leave. I carried him when he wanted, fed him on his demand. Instead of turning out to be a 'brat' as I initially feared, he grew up secure and well adjusted. These are the words of people who know my son - even the nanny who is taking care of him say that among all the children she has taken care of, he is more kind and obedient. Basically, he became a happy boy. He developed steadily in his milestones and is a joy to be around. All these with me being alone and only with the support of my husband (my mom passed away 2 years back, dad and and in laws are working so very minimal help from them).
As for wanting more attention at night, my ex CL told me it's normal - because you tend to move more in the daytime when you were carrying your baby so they get lulled to sleep more easily. At night when you're sleeping they will be more alert. It will take some time for them to adjust. Yes, keep it quieter at night with less activity. After a while, they will 'get it' that night is for sleeping.
My experience tells me I can get more sleep when I latch at night (sleep and latch) and bm is easier for their tummies but this is very individual and entirely up to your comfort level. Hope your baby gets comfy with no wind in the tummy and let us know what your PD says!