You haven't even left pre flower yet.
After 21ish days she's stop putting on height. (Be mindful of temps) try keep within a 5c range when lights go off. So, for pre flower I make it so my lights go off during the day, as night time its too cold and you'll get unwanted stretching.
But you're wks of. 1st you gotta finish pre flower about 1-2 more weeks. (Shell stop stretching)
Then she'll come into fattening, around 2 weeks, could be 3
And then ripening also another 2 weeks. You'll know this by the trichomes. Aim for 80% cloudiness and that'll put you in the middle for affects.
Harvest earlier for more head high, and 90-95% cloudy with 40+% ambers for a deep body stone.
Good growing