Hi Brandi,
Wanted to acknowledge your post and welcome you.
My first thought would be to contact your Dr. Of course as we aren't medical professionals and only offer our personal opinions and advice. You do not mention if you are still having intermittent MRIs to check status of remnant,,, that may be something you would want to discuss with your Dr.
Seems little late for synkinesis to develop,, I had facial paralysis after my surgery in 2011 so I do have some eye twitching , which I recently had some Botox injections for and has helped calm it,, and I had a gold weight implant for 2 yrs which caused my eyelid to remain slightly closed; however, since removal of weight and the Botox, the eyelid is opening much wider again ..
Again, all this is probably much different than your situation ,, but I just wanted to offer comments and suggest consult with Dr. If it all continues,,especially if it has not been occurring in these past years.
Best of luck and I would imagine you will hear from others soon..
Jane