Try to just vape more frequently (chain vape) when you get the craving. If you must, allow yourself just half of a cigarette, and save the rest of it.
Repeat the above as necessary, and finish the remaining cigarette, not a fresh one. Soon those cigs will start tasting as nasty as they really are and you will prefer using the e-cig.
Really recommend moving up to an eGo battery for a better, more consistant vape, too.