Cherries Drop From Cherry Leaves

I'm wanting cherries to drop from vanilla cherry leaves when they decay or are broken. Everywhere I looked online says that the loot table is the best option for this. I set up a loot table and named the mod element CherryDrop. The following is how I set it up:

Loot table registry name:  blocks/cherry_leaves

Loot table namespace: Minecraft

Loot table type: Block

Am I doing something wrong, or is there something else I should be doing? All the discussions I could find online were at least 2 years old, so I could just be missing something.