Sometimes Minecraft can have very large caves, especially in the 1.18 version. I've found the dungeons on stilts look rather dumb when they're up in the air in a cavern like that, so my suggestion is to have dungeons not place entirely in caves: let caves cut away fully at dungeons, instead of having them cut away bits and pieces.

Might be best accomplished by making a config for how much (percentage) of the dungeon is placed into caves.