I can't comment at all on flea protection because we don't have fleas here.
When I was breeding and that was several years ago, I made sure the mom was wormed before being bred. My vet suggested not worming the puppies at a really young age if the mom was worm free and they weren't showing any symptoms at all.
As for feeding, I had a couple of females who liked to have litters of 9, so to help them out, I supplemented with goat's milk. At 4 weeks, I strarted feeding the puppies with dry puppy food moistened with warm water. I also started offering them fresh water several times a day.
I weighed them every day, made sure everyone was growing and just generally looking healthy, but they didn't go to the vet until their 1st shots (and at that time they got tattooed).
[image]http://www.imagestation.com/picture/sraid225/p5e50477ef63ae4cdeb62570d23601ebe/e89ec0aa.jpg[/image]