I think everybody on here has probably reported fake hours in the beginning of leaving. Its just part of the process, I guess.
The bottom line is: there is no graceful way to bow out of this religion. This is a system of their creation. Unfortunately, a little deception and a few white lies are sometimes necessary in hopes you come out of it as unscathed as possible. I wouldn't challenge your parents on any issue to try to justify why you are leaving. I would leave quietly, with as little fanfare as possible. That's what I did. It takes a while, but its better in the long run.