Not eating isn't the problem, it's a sign of a problem or a set of problems so let's start there. Can you give information on the age, size or weight of this snake? Detailed information on it's housing including where the enclosure is, size of enclosure, temps and humidity and how you monitor those, hides provided, substrate used, etc. When exactly did you get this snake and from what source (breeder, snake show, pet store, etc.) Lastly, how often do you handle and the way you thaw and offer the f/t would be very helpful.