How to make mobs drop suspicious sand with an existing loot table?

I'm making a skyblock datapack and I want players to be able to get Sniffers, etc. without needing an Ocean Ruins structure. I can give myself a sus sand block that works using /give @p minecraft:suspicious_sand[minecraft:block_entity_data={id:"minecraft:brushable_block",LootTable:"minecraft:archaeology/ocean_ruin_warm"}] but making Husks drop it isn't working. I've tried the set_loot_table function and the set_custom_data function, but the blocks that they make things drop don't give you anything when you brush them. I've included the Husk loot table I'm using. Any advice would be appreciated!