Is there any way to UV remap a material function?

In order to make a specific post-process effect, I need to go through a load of steps with scene textures before I do a UV remap to the result. The end of this chain of steps is a lerp, and this is what needs its UVs edited, but lerps don’t have a spot to plug in a UV remap node. Is there some way to make this lerp into a texture or something like that? If you’re looking at the picture below, first of all, I’m sorry it’s so messy. What I need to do is replace the three scene textures at the top right with the result of the lerp near the bottom right. Thanks for the help.