Is there any other source of energy that can be consumed while fasting besides coffee?
Are you trying to avoid coffee because you don’t like it or are you trying to avoid caffeine?
They sell caffeine pills OTC and you can find many other products with caffeine; think beverages or drink mixes (can be hard to find without calories or artificial sweeteners though).
I take these Reset energy electrolyte capsules. Has 6 of the major electrolytes plus methylated b vitamins and green tea & green coffee bean extracts. Excellent smooth energy and won’t break a clean fast. https://www.amazon.com/Extended-Electrolytes-Himalayan-B-Complex-Vitamins/dp/B08ZYWC5Q8/ref=sr_1_6?crid=CANKQWM1FHE1&keywords=reset+electrolytes&qid=1672436840&sprefix=Reset%2Caps%2C314&sr=8-6