Forge 1.19.3 How to limit mob spawning

[DinoPawz]

I have set up my entities to spawn using json files in data/modid/forge/biome_modifier directory like so.

{
  "type": "forge:add_spawns",
  "biomes": [
    "minecraft:swamp",
    "minecraft:beach",
    "minecraft:mangrove_swamp",
    "minecraft:ocean",
    "minecraft:river"
  ],
  "spawners": {
    "type": "modid:mob_name",
    "weight": 899999,
    "minCount": 1,
    "maxCount": 1
  }
}

However, when I am not in one of the spawn biomes, there is an acceptable number of spawned entities 7-8 and only 357 entities in total. However, as soon as I go to one of the spawn biomes, hundreds of my mobs immediately spawn and the entity count jumps to 3500+. Now after just sitting in the biome for a while, thousands of each entity type have spawned and the total entity count is crazy at 15,833! How do I limit mob spawning, since the weighting doesn't seem to work?

[DinoPawz]

I looked up how Forge does it for the forge entity list but the level.getEntities().getAll() command is protected in the Level Class and not available within the checkSpawnRules function.

[DinoPawz]

Spawning works if you set all the weights to 1.