Pumping and supply

Has anyone had a dramatic increase in milk supply then the next week drop drastically? If so what helped you get back the supply or overproduce? I’m drinking the tea and taking supplements and drinking body armor as well, my body is just barely keeping up with my sons needs and how frequent he eats. The formula we’ve been trying to supplement with makes him throw up both formula and the breast milk so I’m trying my best to stick to milk. Any suggestions?