Botox to Chin 3 Days Ago Caused Lower Lip to Slant when Smiling or Talking, Which Side Would Require a Bit More Botox? (photo)

The side that is dipping is still functioning. But do not chase the look. Allow the BOTOX to wear off over the next few months! 

My concern is that more BOTOX is only going to make your issues worse not better.  If a small does was used, then the effects should wear off relatively quickly.  If a larger dose was used, then it might take a relatively long time for all of these changes to wear off.  I personally feel that using filler for the chin is much more predictable.  

Because it's only been 3 days since your treatment, I would wait before making any assumptions about the final outcome. It may take several days before it's all taken affect, then I'd consider visiting your provider for further assessment to determine if you need any adjustments.