> Mom is eating, won't take the puppy food so giving her chicken and rice or beef and trying to hide some puppy food in there (which she spits out!)
First of if the puppies were in trouble, they'd not be quiet (other than when getting frustrated as they nurse, when a teat 'runs out'). Many litters do drop weight or stay the same for the first day or so too.
Puppy food - is for PUPPIES not for nursing bitches. All our bitches, without exception, had their regular food plus extras like scrambled egg and extra protein. Natural yogurt is good too, to keep the good bacteria.
Newborn puppies do not need lashings of milk and it's better mum doesn't over produce and risk running into mastitis if the puppies don't draw off enough milk, especially with the bigger rear teats which sometimes tiny puppies can't deal with. Don't supplement unless it's clear the puppies aren't getting enough (noisy!). It's usually only necessary to supplement with an overly large litter (half on the teats and half being supplemented, rotating). It's far better if you just leave what's going on rather than 'confuse' immature digestive systems by using something other than mum's milk. Feed mum lots, so she can naturally provide for her litter. And she will be at her maximum lactation during the 3rd week, at the end of which you'd start the weaning process, depending on how well they are doing.
Round full tummies 'could' indicate worms so be ready to start worming from 2 weeks, and every 2 weeks until they go to their new homes. Mum should be wormed at the 2 week stage too. We used Sherleys Worming Syrup for the puppies, and a regular adult wormer for mum (who had been wormed before being mated btw).
Fading puppy syndrome has to be thought about, but it's rare - we never had this with any of our puppies. And it's usually more to do with some infection getting in, not insufficient milk.
https://vcahospitals.com/know-your-pet/puppy-fading-puppy-syndrome-in-dogsProvided mum is doing her job - try to get as much rest as youi can now...... your work begins when weaning begins!!
Oh and make sure the puppies are warm enough - early days they can't regulate their own heat. We kept a thermometer in the bottom of the box (on the pigrail).