I like the lower dosing rates, and I save the sugars for when I want to force a fade.
I haven't seen the plant, and without knowing a whole lot more about how it's being grown, I hesitate to say push more P and K. It may just be a matter of tweaking the balance or adjusting pH, or even double checking VPD (vapor pressure deficit) parameters. Give us a bit more information on how it's being grown, show us the whole plant, and I'll feel more comfortable telling you to push more fertilizers.
Outside of that, kelp is good for K (and other schtuff) and I like bonemeal for P.