Can't seem to adjust food milestones. A .cfg file for clients is generated but the food milestones option seems to be in server version and it's not editable ingame. Can't find the server version in the config folder, either (not as .cfg or .toml). Did I do something wrong?

Please read the second note in the description on CurseForge carefully.

I see it now. Didn't know Forge decided to overly complicate things (switched to 1.15.2 recently from 1.12.). Thank you for being polite about it.