Interesting, what specifically are you going hard on that you think causes it?
Lacto Serum twice per week, week 3 through up to one week until the end of flower can do it usually all by itself. However I also use Natural Mystic from DEM the same weeks 3 through one week before flower, and I will foliar lab serum and natural mystic once per week throughout the life of the plants. A couple of compost teas throughout the life, along with a ferment plant extract made from kelp, alfalfa, willow bark, and moringa helps as well. I also have been messing with adding weight to the final product. I have been using 1oz. of kelp per gallon of water, and 1/2 oz. of fish hydrolysate per gallon of water weeks 3-7 of flower. It has added to the weight of the final product.
None of the above includes my top dressings that I do in veg, and one in flower.
Truthfully all of this is not necessary, however I am trying to see how far I can push the envelope. In a commercial setting, or for a beginner, you could cut out out almost all of this and still have a great end product. Top dressing and some Lab serum and you would be good.