Decaf coffee - when is it too much?

Hi,I fast typically from 6 pm till noon next day. In the night time I drink 2-3 cups of decaf coffee to help with the hunger. Do you think that's harmful to your sleep to do that? And what could I drink instead that tastes similar to coffee during my fasting window? Thank you! via /r/intermittentfasting https://ift.tt/cUVNz6y