You are in the endgame now dub boys
So we should get PM2019 content around february or march, still a bit far but we are alreay in the new year at least
Don't be so sure it'll be that quick:
here's the list of recent hiatuses between generations of the dub anime:
between AG and DP: March 2007 to June 2007 (3 months)
between DP and BW: no hiatus
between BW and XY: December 2013 to February 2014 (2 months)
between XY and SM: January 2017 to May 2017 (4 months)
Also, within the Disney XD era, here's been the hiatus between seasons:
between seasons 20 and 21: December 2017 to March 2018 (3 months)
between seasons 21 and 22: February 23, 2019, to March 23, 2019 (1 month)
So, based on all this info, I definitely expect a hiatus after SM146.
However, based on the way Disney XD has started each of the last three seasons, I expect that once the hiatus is over, we will get a weeklong bomb of at least 8 new episodes in 1 week.