Break / MakeMaterialAttributes - how to scale UVs?

I have a material based entirely on a material function. Another material function simply forwards the first function (and adds micro / macro variation). I would love to use the second material function to scale the material.

Can I simply multiply the UVs?

Multiplying / Dividing the UVs works for tiling/zooming into textures. You can also check out the ScaleUVsAroundPoint and ScaleUVsByCenter nodes.

Hope this helps!