I noticed that I too am vaping A LOT more than what I thought I would. I was even worried I might get Nicotine poisoning! My supplier said that 1 cart (about 1ml) is equal to about 12 cigs..I smoke about 3 cart fulls a day as well. I was a pack a day smoker. So far no signs of Nic poisoning, but I did lower my nic mg from 11 down to 6 and now waiting on my 0 nic juice. I'll let you know if I seem to have nic withdrawals once I go down to 0....but I doubt I will.