Just continue to fade for now. See if you actually get any phone calls or visits. I suppose if they did phone you could claim you are not you and that you just got issued that new phone number so don't call you anymore, or you could refuse to answer the door if they show up at your house. In a large KH that you rarely attended, there is a good chance the elders probably wouldn't recognize you outside of meeting clothes.
I've gone from elder to over 18 year sucessful fade. Was faded for 12 years in my area before moving away. Now, I'm so far away and removed from them that I doubt seriously they would act on anything they possibly heard. I do however understand the principle of wanting to formally DA from this evil cult. I have a personal vow that if the JW's ever somehow contact me to get into my personal business that I will give them the harshest ass chewing they ever had while exposing their false cult for what it truely is.
As far as I'm concerned the JW's can let sleeping dogs lay and remember me for all the good I did when in, or I double dog dare them to somehow call me up and pry into my current life.