get more roof!
seriously tho, my brothers and I had a very similar issue back in the day in our parents attic. a 9 foot monster pressing against the skylight.
we took the girl and transplanted it inside a small tote, we cut a groove on one side of the tote and laid the plant on its side at a 45 d angle, filled the tote with dirt and lit the length of it with a motley assortment of shop lights, lamps, ect lol what a fiasco. we had support lines stretching across the entire attic and extention cords filled with incandesent light bulbs and shit.
i swear that girl was over 20 feet! but it was 20 years ago and memories tend to exagerate.
sorry if im no help dude, i just read your post and had a flood of nostalgia from the innocent days.