You could twine the stems around on the top of the dirt in the pot and let them root, that would create a bushier plant. Yep, my growing conditions are much different than yours. Mine stays outside all year round and in very mild winters it will be green all year or die back to the ground in a freeze then come back in the spring. Worshipers come in the form of grandchildren ....and husbands if train them right
I'm new to this gardening stuff. So if I tie the stems down by the dirt, they'll automatically root? Cool.
They will root at a leaf node (where the leaf meets the stem) You can either use a U shaped piece of wire or just sprinkle dirt on top of the stem to hold it down. I don't know how long it will take but they will root and start new growth. Any vine will root that way and so will climbing roses, whether you do it on purpose or they just lay on the ground, they will root at the leaf node. It is a great way to get new plants.