If that were mine (which it isn't) lol, I'd probably chop it way down to it's 4th or 5th node , and cut back whatever branches are left at the top by about 1/2 or more.....give it a nice christmas tree look.
Then I'd give it a large dose of silica with it's next feeding. Give it a few days to recover then crank that light up to about 60-70k lux and flip. Increase MC .5 in about 2 weeks and get some other flower booster in there.
That's just what I would do, I'm sure there will be lots of ways to proceed and lots of opinions