Well, I'm no expert but I purchase a lot of stuff from PetEdge.com.
They carry many items with great price!!!
You can find peepad, tooth brush/past, comb, shampoo, and conditioner.
As for how much to feed is little tricky.
I am still not sure myself.
Considering how small the puppy is, I only give small amount 3 times a day and treats in between.
I've been lucky that she hasn't had any hypoglycemia episode and she has healthy appetite. (She is a little piggy!!!)
You probably want to talk to the vet to make sure you are not over feeding or under feeding!!!
Again congratulation!!!