> How often are you cutting pups nails?
Indeed!! I have been known to nip the pointy ends of puppy nails, almost from birth, to help protect mum.
By the end of week 3 going into week 4, weaning onto solids can start, for sure. And once she knows this is happening she most probably will just go back in to clean up after her puppies have eaten, allow comfort nursing, standing up, and the moment she feels the TEETH (never mind the pointy nails!) she'll want out. Fast. Some dams are better at staying in with their litter for longer, than others. If she wants out, providing all is going well with weaning onto solids (puppies should be taking most of their nourishment from mum early on), there really is no need to force anything. Each of our litters was different, depending on mum and how well the puppies were doing in general.
Goats milk, which is close in make up to bitch milk, is perfectly fine for puppies - we started the weaning process using goats milk, warmed, teaching them how to lap, 4 times a day, and also a very tiny amount of raw lean hamburger (mince). This is eagerly gobbled up and the temptation is to give more than is good at this tender age. Once a day, quite enough.