https://github.com/CorgiTaco/BYG/blob/3c3c71757c33f019f9b65156b219ed96a939fccc/src/main/java/voronoiaoc/byg/common/biomes/biomes/EvergreenTaiga.java#L76

Doing this makes it so that every game launch, there is a change to the sub biome listed since the seed is different to the Random. This also means that if chunks with subbiomes are regenerated, they may regenerate with a completely different sub-biome

Should work now bc of #27

Patched here: https://www.curseforge.com/minecraft/mc-mods/oh-the-biomes-youll-go-fabric/files

LMK if it doesn't work