I hope you try it and let me know in the comments what you think.
Enjoy!
Diagram showing how to divide the paper before folding. Each 3 square division represents 1 inch. The first 8 divisions are exactly 1 inch each. The next 2 are 1 1/16 each followed by three 1 inch sections ( labeled side, bridge, side). Finally there are two 1 1/8 sections followed by three 1 inch sections. I made a model of this on graph paper to make it easier to score the lines. Then I moved on to decorative paper.
Here is the structure folded and ready to pop into boxes with bridges between them.
Here are the boxes from the back showing the extra section between them. This extra paper is necessary to act as a hinge to allow each box to fold inside the next one.
The boxes beginning to be nested.
All the boxed are nested inside the largest one. You can make this with more box sections by increasing the width of each box by 1/8 inch. Good luck.