MMM you got it totally correct!
Sending this form or any form or any letter or making any statement to the Elders is the LAST THING you want to do if you desire to "quit quietly" (or as we like to call it here: FADE).
These signed and retained documents of peaceful leavers will contribute to a Death by a Thousand Cuts for these religious, shithouse dictators.
Of course, my only experience is here in the US, but with that caveat if you really believe the BS stated above then I am afraid my friend, you are seriously delirious. You won't get but about 3 minutes of their attention as they decide to announce you made the decision to no longer be a JW. (Let the shunning begin.)