I'm far to the southeast of you and my season is over. Only because I made as much syrup as I wanted. I tapped the 17th of Feb and pulled my taps after seven weeks. Today I had sapcicles hanging from one of the tap holes. Perhaps just wait it out a little longer.
2016-First year
17 Taps
Block arch & steam pans
About 1 1/2 gallons
2017-20 taps
About 3 gallons
2018-13 taps
Same Block arch & steam pans (modified arch & pans)
2019-12 taps (keep losing trees)
2020-Brand new Smokey Lake StarCat evaporator, about 15 taps.
43.62N 87.78W