On further thought, I would expect the organization to stress that this change doesn't mean there should be less field service.
I expect something like this: "Brothers, just because field service reporting requirements have changed doesn't mean we should flag in zeal. If anything, the amount of our door to door witnessing ministry should be increasing given that this may be the last chance for our family, co-workers, and neighbors to come into the truth before the fiery storm of Armageddon is upon us. If we truly love Jehovah and love our neighbors as ourselves..."