Fasting is read as discipline and purification — choosing less in order to see more clearly. In a dream it can also reflect self-denial or something you feel you are being kept from.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.