I'm no expert, but perhaps you can use a technique I used to propagate a climbing rose that was a favorite of my dearly departed mother. If you can find a branch(es) low and near the ground, find a leaf node or bud several inches back from the tip. Pinch the leaves off or slightly "injure" the area at the leaf node by gently scraping away some of the outer bark tissue on one side of the stem(be careful not to sever the stem)(perhaps you could apply some rooting hormone to the injured area as well). Then simply make a trough in the soil near the node and bury that section of the stem in the ground (perhaps around 2 inches deep or so), cover with good soil, water, and then place something heavy (like a brick or medium stone) over the buried stem to hold it in place under the surface. Put a marker of some kind or a ribbon on the exposed upper portion of the stem so you don't mow it or hit it with the weedwhacker. Hopefully, the tip will continue to grow and roots will form around the injured part of the plant that is buried. At some point (I'm not sure now long it will take), lightly and carefully excavate around the area that is buried to inspect for roots and if there are enough there, cut the stem below the roots and transplant into a pot with good soil or directly into it's new permanent location.