For me, the cravings were more psychological. I was getting the nicotine I needed, but if I know I "can't" have something, wanting it will drive me mad. So I just put a pack of cigs and a lighter right next to where I was working and for me, knowing I could have one if I wanted one meant I didn't need to actually have one. I had like maybe two the first day I was vaping and one the second day and then I never wanted another. It's been almost eight months and I don't miss them at all. When I pass people smoking or see people in a movie smoking, it makes me want a vape, not a smoke.
I know for some people, throwing out all temptation works better, but not for me. I still have a half a pack around here somewhere and knowing they are there keeps me from panicking, even after all this time.
Give yourself a break and don't be so hard on yourself. You're doing great. If you smoke a couple, just remind yourself how many more you would have smoked in the past two days if you weren't vaping. Congratulations on the ones you didn't have. Cup half full instead of half empty.