What exactly do you mean by this?
Are you trying to separate faces inside of loops of edges so you can extrude them? You can try using Intersect Faces. With as much geometry as you have in this model, it’ll take some time to run through the entire thing but it’ll surely be faster than hitting all the edges with the Line tool.
Be aware that Intersect Faces isn’t likely to get everything. It’s not uncommon for there to be gaps or for edges to have different Z values so they won’t make closed loops or loops of co planar edges. You can count on having to fix some parts manually. There are some extensions–TIG’s got one that will flatten edges to the same Z value which is a big help.
Do you really need all of this geometry for the model you’re creating? If not, the first step should be to delete what you don’t need.
Also, you’ll need to reverse faces so the front faces are up. And don’t even think about painting faces with materials until you have the entire model 3D The materials will mask issues and slow your computer down making it difficult to work.