Lulu will be 17 weeks old on Tuesday. She weighs about 2 lbs 3 oz now. As far as how much she eats right now...I'm not 100% sure. I measure out 1/4 cup of kibble in the morning. She eats all of that & I refill it with another 1/4 cup, but she doesn't eat all of that. So she gets more than 1/4 cup, but less than 1/2 cup on average.
If you have any more questions, please feel free to ask.
ETA: I wanted to add that Lulu's breeder did feed the pups wet food for a while while transitioning to dry kibble. Lulu was weaned off of the wet food before she got to come home with us.