Fasting and weight loss after filler?

Hello, I am going to get my cheeks injected on monday morning, i usually get this treatment twice a year to keep my cheeks full. For spiritual purposes i usually fast for two weeks once a year and my meditation group has decided to gather and start the fasting on monday afternoon. Will my freshly injected filler be affected by the fasting? Do you reccomed to re booking the appointment after these two weeks? Thanks