I needed to quit drinking caffeine and my wife decided to just start transitioning me onto decaf without telling me, each week mixing a little more into the regular coffee bean cannister until it was basically 100% decaf. It worked really well, as I didn't find out I'd been drinking 100% decaf until she told me about it.

I had the same process as you (see my comment) and it was much better than quitting it cold turkey.