I got an dehumidifier for this and upcoming grows to deal with my high humidity. This helped a lot to get the humidty to like 60% average which I'm pretty happy about.
But more important I was afraid I would get mold late flowering or during the drying process. I"m pretty relieved that I can hold the humidity at 60% for the drying process.
I fed the plants on day 52 with 2ml/L of BioBizz Bio-Bloom and adjusted ph with PH Down from Advanced Nutrients. The buds are stacking up even more and on this day I also set the light power to 70%.