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

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.

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.  

I would give some additional time, 5-7 days prior to moving forward with any additional treatment.  Consult with your injector after one week and he/she will be able to better assess your situation and any further management that may be needed to attain symmetry.