Here’s what I did in two week intervals to avoid withdrawal symptoms:
75% caf/25% decaf
50/50 caf/decaf
75% decaf/25% caf
100% decaf
I then drank dandy blend for a while because it tasted similar and was good for me.
Have a little special drink for yourself when you know you are going to be around coffee. It does not have to be something expensive or fancy, maybe just something that you enjoy and don’t normally drink.