Hm, have you tried just not doing anything? What if you just "zoned out" during your dream as if you were daydreaming in real life (to let the dream take over)? Have you ever gone to sleep in a dream? Maybe it could confuse your brain enough to let you dream without lucidity for a while. Just spitballing here, I have no idea how those things might play out for someone in your situation or someone just more experienced than I am...

I recently read a similar thread and another member suggested to learn to be an observer of your dream rather than control it, with the idea being you will let the dream do all the work and your consciousness can rest.