Hello
Some plants just have that pattern...no large main colas but many dense small nuggets. If that's the case not much can be done. Otherwise, look into your nutrients and environment and possibly consider a bud bulking supplement for the last weeks...most of them are mainly a sugar, kelp, and magnesium, maybe some amino/fulvic acids. I've used fox farms with good results. But also look into defoliating the bottoms very thoroughly in the next grow to channel that energy?
Happy flowering.