I start offering mine feed at 2 1/2 weeks....I soak the feed in hot water until soft then add a little milk and more hot water to make a watery mush....not all will start eating at this time but usually will before there 3 weeks old...
x2...no blender for me...I pre soak the dog food in milk in the fridge..new batch after each meal...and then I mush it up and warm it on the stove...