I wouldn't get too worried yet, about it not eating. A healthy snake can go for a while without eating. But like others said, be sure to keep a few days between each feeding attempt. I had a similar situation with one of my snakes. He ate F/T for me the first time I fed, but refused after. Refused every feeding time after. I tried everything...tubs, cage, wiggling, not wiggling, slitting, scenting, etc..etc..etc... I kept my eye on his weight with a scale. When his weight fell too much for my liking I finally tried a live pinky and that did the trick. He did maintain his weight for a good few weeks, even without eating, but after a couple more he started dropping. He has ate for me every time now when I feed him live. Though I wouldn't try this right away, if you want your snake to eat F/T, but always keep it back of your head if he continues to refuse in the future. It's better to eat live, than to eat nothing at all.