Re: confused and panicking!
Relax, mama! Everything is okay. This is all in the normal realm, and it is all fixable. It should fix itself even if you do nothing other than nurse on demand.
When a baby starts to sleep longer at night, it's normal to experience some engorgement in the morning. It takes the body a certain period of time to realize that the 5 hour stretch of no demand it is experiencing is not just a one-time thing, and to adjust the nighttime supply to the proper level. How long a period of time? Could be just one night, could be a couple of weeks. While this adjustment is taking place, it's common to see some green poops. At least 1-2 feedings per day (those first morning feedings) are pretty watery and when they work their way through the digestive system they are going to emerge as green poops. As long as the baby's poops are not all consistently green, it's not a big deal and you don't need to block feed, though you might want to do so for those first couple of morning feedings. That will result in a faster adjustment of supply. As long as you don't block feed all day long, you're unlikely to run into trouble.
You don't have to worry about your prolactin levels. Prolactin responds to demand. Nurse more, and you'll make more. Nurse less, and the levels will fall off. And this system works no matter how long it has been since your baby was born. A lot of moms think that they only have one shot at establishing supply or getting the "right" level of prolactin, but they actually have forever. It's easier to establish supply right in the beginning, but you can increase supply at any time.
Fussiness at the breast is normal with such a young baby. They are fussy creatures and they have trouble controlling milk flow. Just be patient, keep experimenting with different nursing positions, and stay away from bottles. A lot of moms introduce a bottle when their babies fuss at the breast, thinking that they have to feed the baby somehow and it's just going to be one ofprivacy two times until things get back on track. But then the baby realizes that bottles are easy, and starts to fuss at the breast earlier and earlier, in order to get the bottle.
One thing to be aware of is that feel "full" is not the norm for a mom whose supply is closely matched to her baby's needs. When supply and demand are in sync, you will probably feel empty or deflated pretty much all the time, unless your baby skips a feeding. It's only when you're making extra milk that you feel full.
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!"