This is not indoor growing.. you cant push them to there full ripeness here all the time.. some yes,, some no.. also chances are increased with a hoop house..
Most michigan guys know what works outdoors and grow those strains and save the other later strains for indoor.. some time you got to roll the dice with a strain youve never grown outdoors here before.. sometimes you get lucky..
My plant is about the same looking and i know for a fact mine will finish here.. some plants have different flowering rates (speed)and finish in 8-9 weeks.. this can also vary with in the same seed batch (pack)
Im not familier with the genetics of his plant but im still optimistic it will finish..