It took a bit to get all of my Vitamin D lab work back (it seems to not be something labs deal with frequently), but it seems that indeed, the way to treat is with large doses of Vitamin D- 50,000 IU of D2 once a week for eight weeks.
The kicker? The large dose Vitamin D comes in gelatin-filled capsules. D’oh! The good news is, there is a liquid form, but it’s hard to find. You may have to ask our pharmacy to order it, which is what I’m doing.