My neighbor brought me a baby squirrel he found in the street yesterday. I raised two babies a few years back and they were just two weeks old when found. This guy was in really good shape considering where he was found. His eyes are not open and he weights 95 grams so I am guessing he's on the upper end of the 3-4 weeks. range. He ate well yesterday and he is very active today. I've seen various things on how often and how much to feed him. Anywhere from 4.75 mls to 6.65 and anywhere from every 2-3 hours to every 3-4 hours. I know baby squirrels can overeat so am alert to that but I last feed him at 2 pm (4.5 ml) and he's definitely hundry now. Very active, searching for the milk, etc. I did notice, unlike the other two I raised, this guy likes to eat and stop for a minute and then eat some more. I'm getting good poop and pee from him.