Yes, not long though, the NVC stage is pretty quick and your wife is also at one of the quickest consulates so won't be too much longer.
You can see NVC timelines here, it's updated weekly - https://travel.state.gov/content/travel/en/us-visas/immigrate/nvc-timeframes.html
Make sure you follow the step by step guide posted by @Crazy Cat super carefully to avoid any delays, good luck.