I would recommend gauging your parents and whoever is still in. Gauging in the sense, just try to predict what would be the worst they would do if you became an apostate. Based on that, decide whether you should get along or at least be PIMO.
I did this in my life. My wife and mom are still JWs. Once I decided that they would not shun me, I wrote my letter of disassociation. My relationship with them continues as happy as Usual. No repercussions!
Very often I still try to plant seeds of doubt in them. It ends up in a heated argument for a few minutes and then love takes over..