Pro tip, silkies hate chow. If your silkies are not raised on chow, they will not eat chow. So make sure your batches are 100% leaves or 100% chow, or you will get a lot of die offs.
What worked once for me was running ALOT of leaves through a food processor so it looked like shredded paper squares, and then instantly vacuum packing them and freezing. They would only each half of it, but they ate it. A storm took down the tree i used, so it was run and grab as many leaves as possible before they started wilting, while trying to find another tree with a person willing to let a crazy person take just the leaves instead of the berries. Pictures of children with lizards helps in negotiations.