I heard that you can tap in the November time frame but the sugar content is very very low.
I also read that the trees need cold weather and longer the cold period (snap) the higher the sugar content wil be, because the pressure from freezing causes a molecular change in the SAP which increase the sugar content. (lke coal into diamonds)
So tapping in the fall it is not worth the effort.
19-21 Back to tapping
17-18: not able to tap
14-16 present: Portable Oil Tank evaporator 40+ taps
09-14: Stove to Barrel - 20 taps