So the actual smoke is helping your speech? or is it the effect of smoking the herb? I know nothing about this kinda stuff but I think maybe the smoke can be making the disease wrose by stimulating the damaged areas. So I guess if its the effect of the herb and not the smoke helping ur speech than maybe i can help. Well fortunatley there are ways to use cannabis and not smoke it by cooking and eating cannabis so I reccomend going to check out the recipie section or you can use a good vaporizer which cut down in alot of tar or what ever that is inhaled which may help also. I may know nothing about this but ive tried to help my my view of things and also you said you thought you were becoming dependant on weed.... no no no thats wrong you dont become dependant on weed... well yes it can be mentally dependant i guess but same thing goes for food,sex,religion or what ever you can become addicted to anything but in no way shape or form will you become physcially dependant on weed