Over-grown Nanking Cherry

I find that there was a small pot hiding way in the back long enough to grow 2ft bare branches with NO buds anywhere buy on the ends … ,any advice on when to reduce their length to 2or 3 inches

Wow, sounds unusual. The main option is to get the tree really healthy in an effort to stimulate back buds and/or cutting back to stimulate new buds.

Thank you J ,pix of flower soon ,There is a long complex & heroic " public " back story to Nanjing aka Nanking Cherry ,What it means to me is slightly separate but important in my family’s history. I do very much want it to be brought back to vitality as a "touch-stone/reminder "