Wood mandala size issue

I have bought the beautiful SVG of the wood mandala. Not only is it 15+" across and won’t fit on 12 x 12 mat, but apparently needs to be not more than 11’’ long. I thought I could resize design by slicing out the outer layers to a leave a suitable diameter as to shrink the design would probably just result in shredded wood.
Am I on the right track? Or is there a better way?

Hi 929fd104bd362acdef1f7c57d599cb5f

Would you be able to size it down to 11" or does it need to be 15"?

I’m going to try using “slice” to cut the circular design in half, then use a 12 x 24 mat, make the design in two pieces - that is if I can find the right 2mm or less thick Basswood anywhere.

How did it turn out?!