Day 1 & Day 12 of masseter Botox. Not much changes. Should I get extra jabs? (photos)

Botox for masseter reduction can be a very safe and predictable way to create slimming and tapering of the jawline.  When performed by a surgeon experienced in the treatment, it will create a slimming effect in 4-6 weeks which will continue for 3-4 months.  Maximal results will be achieved with serial treatments after 4-6 months.

The Botox will weaken your muscles within two weeks but the change of facial shape can take much longer. The muscles first must become inactive and then lose volume. This often takes months and multiple treatment , not weeks. If your muscles are still strong, consider more product but if you expect to see a new shape to yopur face you need to be patient

I think you should go back and ask you doctor for an evaluation. If the muscle is still very active, more can be injected. If the muscle is weakened significantly, it is better to wait and get the second injection as scheduled. See link.