So I've made patches for the new version of cavernous and they seem to sorta work just not really as the biomes show up in the world when I locate them but they are very splotchy and not done correctly. I'm wondering if maybe I messed up when making the patches as if I take all of the patched stuff out and add the same code to my manual file it works fine. Heres the patches

overworld.json.patch from dimension folder
overworld.json.patch from noise_settings
also as I said I don't really care about the vanilla biome changes too much as terralith handles that nicely so I deleted the biomes folder from the world gen and it still worked fine in my manual version.

If you look in the log, are there any errors related to the patches?
I ask because from my cursory examination I noticed a json syntax error in the noise_settings/overworld.json.patch (a missing comma after the path line), which could be causing the problem you described (by causing the patch to not be applied). Otherwise, if that's not it (and there are no errors in the log), I can try and do a more detailed analysis later.

trying that rn, I guess I didn't catch it in VS Code since I didn't have the diff set to json to check

bruh

it works now, thank you so much XD. Can't believe it was just that facepalm I'll make sure to set that diff next time