I hear the frustration completely, and you're doing an incredible job! My doctor warned me that statistically the maximum drop from this medication tends to cap around a quarter of someone's starting weight. So you can run that math off your own starting number. Plateauing around there is completely normal, it usually means the medication's already done everything it's going to at full strength. At this stage it's about holding steady, keeping things balanced, staying consistent on the dose for a while. Healthy routines, balanced meals, resistance training a few times weekly, that sort of thing.
Also depends on whether you've actually reached the top dose yet?