Trying to get caves to generate as high as the world height

Right now, I've been tweaking a datapack called Aetherial Islands because I wanted to change the island size. I managed to do that by increasing the first octave from -8 to -9. Now, I noticed that the datapack creator disabled caves in order to prevent them from ripping rivers apart, and when I asked how I could re-enable them, I was directed to the three files in the configured carver folder of the datapack: Canyon Cave Cave_extra_underground What do I need to do to: - Re-enable caves - Increase the height at which they spawn
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