how to generate mushrooms underground

just for testing purposes, ive set sea lanterns to spawn on the floor of my caves with a placed feature json so i can make sure theyre generating in the right place and with the right frequency. however, when i switch feature from ```"type": "minecraft:simple_block",
        "config": {
            "to_place": {
                "type": "minecraft:simple_state_provider",
                "state": {
                    "Name": "minecraft:sea_lantern"
                }
            }
        }
},```

to minecraft:huge_red_mushroom nothing spawns. shouldnt the big mushrooms from the mushroom fields biome be spawning in place of the sea lanterns?
thanks for any help<3