Um, some of us just have big wands. But you could try a wine bottling wand or maybe diy? I'd focus on de-bottlenecking (pun intended) your filling apparatus before trying to fill two simultaneously. Or, if I were to add another bottling spout, I would draft my wife into bottling duty to operate the second one.
Edit: on second thought, the valve at the tip of a bottling wand is definitely the slowest part of the system. If you're willing to either clamp the hose between bottles or flip the lever off each time, the small bleed hole in the spout will allow the beer in the tube to flow down into the bottle as you withdraw the filler tube. Maybe do a test run like that with just water in the bottling bucket, using just a length of tubing in place of the wand, or simply pull the tip off the wand to see if it is any faster.