This might not be as useful as you think. Kerf sizes change based on the material being used, in my experience you’re really better off using the final material all the way through when trying for highly accurate inlays like this.
That being said, you could probably save a great deal of material in two major ways:
breaking apart your layers into different pieces and nesting the segments
With breaking your layers, you’ll end up with seams on the sides, which may not have been the right aesthetic that you wanted here, but you can turn that into a feature:
or a bit more fiddly…
Or the fiddliest ( not the same though, the technique doesn’t save materials here):
This kind of design change makes it so you don’t have to throw out a bunch of center cuts.
packing your inlay pieces, especially the padauk. Maybe you did that already?
The idea is that you’d take your padauk inlay design and break it apart, then rearrange the pieces so they fit more tightly. You can save a large amount of material doing that, probably 75% or more in this case, just eyeballing the design.