Is it possible to make the lips thinner with lip fillers or Botox?

Lately, I find myself increasingly drawn to and concerned about the shape and thickness of my lips. I didn't realize it before, but as time goes by, my lip line seems to be becoming blurry, and I'm worried that the overall volume feels a bit excessive compared to the balance of my face. When I look around or online, I see that many people choose lip fillers or Botox to make thin lips look fuller and more voluminous. However, I suddenly wondered if these procedures could be helpful for those with concerns like mine, which are the opposite. Are there options where I could use fillers or Botox to actually thin out my lips slightly, or to reduce the overall thickness while keeping the lip line clean? If such treatments are possible, I am worried that my facial expressions might look awkward when I open my mouth or speak after the procedure. I would like to ask for advice from anyone who has received filler or Botox treatments for similar concerns, and whether the natural look tends to last for a long time without looking artificial.