Re: Suction breaking & Let down questions
As long as nursing is painless and baby continues to gain well and produce adequate numbers of wet/poopy diapers, there's no need to worry about the clicking. As the LC said, it's a quirk that your baby will probably grow out of with time, and it could definitely be related to fast letdowns. (Note: after 6 weeks poop output may decline to as little as 1X per week.)
Letdown sensation tends to diminish with time. When supply is well-matched to demand, most moms find that their letdown sensation is diminished or even vanishes. And some moms never feel letdowns at all! Feeling the letdown sensation at random times is a normal part of motherhood, too, and will likely diminish with time.
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!"