I do something similar at the end of the season. I cut off the limbs that still have tomatoes and make sure I have several joints. Pick off the bottom leaves, and bury the stem in dirt, or use water.
Sometimes I use rooting powder, but not usually necessary. Pollinate by hand. Have grown tomatoes through the winter indoors using the fall cuttings.
” Have grown tomatoes through the winter indoors using the fall cuttings.”
BUT HAVE YOU EVER HAD A TOMATO CHRISTMAS TREE!