Just wait. Patience is the key. As nasty as this sounds, Lucas is going to die pretty soon if he keeps gaining weight like this, and then we won't have to deal with his meddling. On the other hand, once he does die, the real corporate types are going to take over the franchise, basically have a committee write the stories for the authors to "adapt", and the situation might get worse. Or they might allow the writers more freedom than a dictatorial visionary would and it will get better. Who knows?