
I don't think a cereal free puppy food will soak like the ones with cereal. so you may need to sue a coffee grinder/blender and blitz the dry food into smaller bits/powder
If the pups aren't taking to the food offered then they must be happy with what they are getting from Mu, is their weight gain steady.
Even though I usually give mine their first tastes from 18 days it does vary as to when they really start eating an appreciable amount, based on I assume on Mums Milk production.
I have had pups really go for it right from the word go, and other litters only take a minimal taster at each meal, until 4 weeks,a nd anything in between.
I use the supplementary/solid feeding initially purely as a back up for Mum, in case her milk fails, so that pups don't get a check in their development.
Hungry healthy pups will eat/drink.