Help with Generating End Islands Further Apart

I am creating a datapack with the goal of generating end islands further away from each other. I've narrowed the area related to this down to the "Final Density" inside worldgen/noise_settings. However, I cannot determine what my next step is. I can cube the density (ranged -1 to 1) to make it approach zero which ensured that the islands did shrink down. However, this does not actually change the distance between the center of the islands.
This is the density-function that generates the base noise for end islands:
{
  "type": "minecraft:add",
  "argument1": {
    "type": "minecraft:end_islands"
  },
  "argument2": "minecraft:end/base_3d_noise"
}