Lactation treats?

My supply has seemed to tank a bit. I still have milk but not as much as I did last week. I haven’t been the best at keeping hydrated or eating enough protein/ calories in general. I breastfeed and then supplement with formula as I haven’t been able to supply enough for my LO to solely drink my milk, but that is the goal. Has anyone tried those lactation cookies or brownies? Or have a recipe for one that worked for them? Rn I drink mother’s milk tea and I eat oats everyday for breakfast and in my smoothies in the afternoon. I also try to incorporate coconut daily as well (canned coconut milk, coconut yogurt, coconut flakes). Could it be as simple as eating enough and drinking enough water? Any tips to help get my supply pumping is greatly appreciated.