She's currently in the stretch. Her growth will slow significantly very soon. I don't recommend topping her right now, because too much stress at this stage will hurt your yield.
My recommendation: keep moving the light up as necessary. Once her stretch ends and growth visibly slows, defoliate the base leaves and bud sites that aren't getting any light. I do not see a better solution.
Side note: that little plant is going to take over your grow room when she stretches, should be very exciting to watch. Get her closer to the light if she needs it, I bet she will be a heavy bloomer for you 😊