I've had him for 3 days. After rehydrating for about 24 hours, we switched him to 1 part esbilac and 4 parts water. His stool has been a normal dark brown poop. Today we started 1 part esbilac 3 parts water, and earlier his poop was normal, but now it is light brown and mushier. Still in the form of solid poop but I hope this isn't a sign of diarrhea. I fed him about 3-4 CC every 3 hours the past 2 days, but tonight I've been giving him closer to 7-10cc because he seems sooo hungry. Like he keeps wanting more! Am I over feeding him? I assume he is only 3 weeks because he only has the bottom two teeth, and weighs a little under 100 grams. He is very squirmy and makes squeaky sounds now and then so I assume that is healthy baby behavior. Give me all the help you can!