How get out of watchtower?
Fake panic attacks to get out of field service. Then fake depression to get out of meetings. Eventually they will figure it out and you can just Sail off into the sunset.
A moment ago I learned it is a easier to leave the LDS (Mormon) church than the WT/JW religion. Note that https://en.wikipedia.org/wiki/Ex-Mormon says the following.
"Outright apostasy of members will lead to a church disciplinary council, which may result in disfellowshipment or excommunication. However, members who ask for their names to be removed from church records or who have joined another church are not subject to a disciplinary council.
... According to a BYU Studies article, as of 2014, about one-third of those with a Latter-day Saint background have left the Church. Of those who leave the Church, about 58% switch to no religion or unaffiliated ...."
I get the impression that the LDS church does not instruct its members to shun ex-members, but that some members choose to shun ex-members.