There are several ways to fade. Personally I simply stopped going to the meetings and on the odd occasion the elders turned up I just gave a non commital answer. In time they just left me alone. Of course if they new I regularly post on ex JW forums they would soon disfellowship me.
It is hard having to stay under cover as it were, but if you have family in as I have, then I feel it is better not to formally disassosiate yourself
Just my own view.