Sorry to hear about your cousin and good on you for helping him! I really don't know much but I think he needs to take as much as possible, may need to work up to it building his tolerance and taking the oil as a suppository is the best administration option, caps are hard to do that way, a 3ml syringe is much easier. I've seen that very high number/cost for RSO because you need a lot. If you look up making RSO, you'll find he starts with a pound I think and that winds up being like 1 month supply. Hoping it works for him. Sending healing vibes!