Re: Will "sleep training" mess up BF?
You have received excellent advice from the PPs. Your pediatrician was giving you parenting advice, not medical advice. When it comes to parenting your individual baby, I will take your 24/7 knowledge over whatever the pediatrician observed (or failed to observe) in a 20 minute office visit.
That doesn't mean there's absolutely nothing you can do about your baby's sleep. Co-sleeping is a godsend. And I suggest taking a look at Elizabeth Pantley's book "The No-Cry Sleep Solution" for a realistic look at what to expect from infant sleep, and for some gentle and breastfeeding-friendly techniques that encourage more independent sleep. That's encourage, rather than train. Training is good for dogs. Not so great for babies!
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"