Coffee suppresses my appetite pretty well. When I do intermittent fasting, I allow myself to drink as much coffee as I want and I have no trouble making it to dinner before hunger becomes distracting.

You might have to drink a _lot_ of coffee though because there's a lot of hours between morning and dinner. I have a coffee maker that brews right into an vacuum carafe (which keeps it hot up until dinner time) and I also have a yeti mug that keeps a single cup of coffee warm for ~1-2 hours, which helps me nurse fewer cups throughout the day.