
You don't say what you are feeding? Are they gaining weight? Do the look well nourished? How often is the dam still feeding them?
I used to vary the meals through the day, 2 RC reproductive starter kibble mixed with moist dog food, scrambled egg with a tiny bit of cheese and weetabix mixed with yogurt or cottage cheese, by 8 weeks old they were on all kibble and I would add moist dog food,yogurt or cottage cheese to one meal out of the four. Made sure water or goats milk available to drink at all times.
There are puppy mousses out there now to temp their appetite which I will certainly try next time. I did try puppy porridge, it was awful, had no taste and they played in it more than ate it.