giving up breastfeeding

My son is 6 months old and I exclusively pump, I am ready to quit! I feel I am overwhelmed between caring for my family, taking care of my terminlly ill mother and trying to pump and stressing about having enough milk for my growing boy. I want to quit but feel quiltly and I'm scared of the pain if I stop pumping, I already get clogged ducts very easily. Any tips to quit and not feel quiltly and to help dry my milk up quickly?