Pixel Art Landscape

Hello, currently I am trying to make a top-down game with a pixel art style. However, I have run into a problem. Currently my textures smooth together, which is fine for sand and flowers. But for the dirt path I am trying to make it ruins the effect.

To fix this I have tried setting brush falloff to 0%, brush strength to 100%, changing the landscape resolution, using some weird trick involving a ddx + ddy hooked up to the normal channel and finally different blend types. So far nothing has worked with good results.

I’ve uploaded some photos, including the texture I am trying to use as a heightblend for the dirt path to give it some variation. Any ideas would be appreciated.