High SMAS facelift. Is there any way this can be fixed?

I would suggest giving yourself more time, considering you're only 6 months post-op from a SMAS facelift. Swelling can persist longer than expected, so it's advisable to assess your appearance after a year to a year and a half. In many cases, tissues tend to settle over time. However, if there are specific concerns such as fullness or other issues, many facelifts can be revised or adjusted accordingly. The decision depends on the location and nature of the concerns you're experiencing.

Please provide some photos so that some guidance can be provided. It is really challenging to even begin thinking of potential options without any visuals.

Sure - there are aways to adjust this. A photo will help but I can think of several fairly easy ways to address this concern.