Topic category: General discussion
So the only thing you will need to do is to create a structure with a single block in it you want to get mixed.
Then you put that structure into MCreator and make it spawn in your biome, set the amount of structures to spawn to 1,000,000. Then put the amount of structures to spawn nearby to min and max 16.
Copy paste those structures giving them diffirent name. 1 structures spawns 16 blocks, in 1 chunk there are 256 blocks if you multiply it X by Z axis.
If you make 8 structures to spawn in your biome, it will be 128 blocks per chunk to get mixed, which is 50%.
That's it, you can play around with the numbers, it's really up to you! :)
Oh and also, dont forget to set block restriction.