Zonal winds @ all monitored levels in stratosphere @ 60S as of 14/11 are still stronger than at same moment last year.
https://acd-ext.gsfc.nasa.gov/Data_services/met/ann_data.htmlBy current forecasts, Zonal Wind at 50hPa,(remembering one suggested proxy for final warming being winds declining to 1ms at that level), look to last a bit longer - by last week of Nov though easterlies will be present@10hPa(again the same forecast from nasa).
If the final warming date of last year is known it might be possible to say if the above situation is a little odd - given the +ve anomylous heat flux the stratospheric vortex has been subject to this season, and the much larger ozone hole of 2016.