Sorry no one has answered you yet but I think it is difficult to say ”no”. If you are following the program as outlined in the BSS book you will need to give up coffee, even decaffeinated coffee. That may sound impossible but if you do it slowly and gradually by the end of the second week you will be able to do it. Dr. Hyman outlines in the book how to accomplish it. I did it and now drink green tea, unsweetened, and cannot believe I have been off coffee for 6+ weeks now. You can too. All the best.

I’ve given up the coffee and, amazingly enough to me, I find I wake up much faster in the morning without it! It surely is tough to wean off of though. Hang in there.