AsNoriuanswered grow question 5h ago i cant believe, maybe you havent turned it on, ussually they can work as humidifier too. my small 3-4 liters delongi brought 120x240 tent with 5 huge plants from 99-80 to 50-55 RH.
i grew most of my grows with humidity 60-70 during flower, good air movement inside and air echange prevented all mold and other issues.
worst case, if nothing helps , clean bottoms first, if that dont help, start doing selective defoliation ( 2-3 leaves off a plant daily, take those who shade most, try not to touch most developed top colas leaves, anything below them can go if needed ).