i think ur stem is to hard to go upwards now... since it has grown another way... just leave it lyk that.. and try LST'ing things during early veg to get the shape u want and after u switch to flower u can remove the lst thing and just tie some tops to get light thru the middle section. i did lst on a plant 1 month during VEG and results were fine also did on another plant way smaller fimmed and got better results