I will be interested to follow this too. I would try three times a day if I were you at least until they get bigger. At least that is my experience with bluegills and yellow perch of that size. Once the above species got to about 8 inches I went to twice a day.
As you are probably aware do not handle them more than necessary. Crappie are very sensitive to handling and stress. Notice the frayed tail on one of the crappies in your picture? That happens very easily.
The University of Wisconsin was successful in feed training them as was a trout hatchery in Northern Wisconsin I bought some from. Unfortunately a high percentage died from a fungal infection in my holding pond due to rough handling after hauling (The idiot that netted them put several hundred in a net that probably crushed many of them), and placing them in the hauling tank with larger trout. They probably got beat around a lot in the tank by the larger fish sloshing around.
Surprisingly the trout farm told me initially they put them in a tank with small trout and they all fed on the pellets almost immediately.
Keep us posted!
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
