Hmmmmm. I respectfully disagree with the suggestions to ask "awkward" questions. All that will do is get people to question you! Then prepare yourself for some real trouble from the local wolves.
If you need to fade quietly and painlessly - keep your mouth shut and continue to do less & less.
If you don't care, carry on asking those questions and stirring up minds. I did that in my last congregation (before I faded!) and received some very unpleasant treatment by the elders. JW's do not like having the "slave's" teachings being questioned - by someone who is clearly an independent thinker!
You have a PM.