Without sounding like a dick, if you're genuinely sitting at 9% or even 10% body fat, I seriously doubt you've got a tyre sitting around your waist. I don't think people fully appreciate just how lean that actually is.
The second barrier here is reducing food intake further, which is where a glp could potentially assist with appetite management. But even that can only take you so far before you're pushing yourself into a state of significant depletion.
What's the actual goal here, brother? Give us some stats and ideally post a current physique photo with your face blurred out. I'm just trying to get my head around exactly what you're looking to achieve.
If you're genuinely sitting around 9% body fat and looking to push even lower, I'd be questioning the reasoning behind it unless you're chasing stage level conditioning for a competition.
At some point you're going to start compromising muscle retention, recovery and performance just to chase a lower number. And ultimately, for what?
I'd be far more interested in understanding your current composition and what you're actually trying to achieve before suggesting you push the deficit any further.