After Restylane - 5-fu or Corticosteroids Scar Tissue in Lip

You are in to much of a hurry! It takes time to see improvement. As for % FU I have limited experience with its use, just be careful. From MIAMI Dr. Darryl J. Blinski

Scar tissue can feel different from Restylane but a resolving hematoma may feel similar to Restylane depending at which stage the hematoma is in its lifespan.  If this is thought to be overcorrection then you may need more hyaluronidase depending on how much was used and if it was diluted or used full strength.

Three days should be enough to see a difference provided enough enzyme was injected.  You did not indicate how much vitrase was injected.  If the vitrase does not take down the volume issues, it is much more probable that notwithstanding your medical records, your doctor injected you with something other than Restylane.  "Scar tissue" does not make lips look this way unless it is scar tissue organized around small droplets of silicone oil.