Dry eye is certainly a trigeminal nerve symptom. It is not related to the absence of tears, which happens when the facial nerve is damaged. You can still produce tears, but the problem is reduced sensation of the cornea, which does not send the proper signals for tear production. The way to deal with this is by using eye drops as frequently as needed - you don't want to wait too long, because by the time you feel the dryness and "grittiness", your eye is already too dry. Try Refresh Celluvisc, which is preservative free (but expensive) once or twice a day, combined with Genteal or Systane. Warm compresses also help stimulate tear production. This symptom is annoying but manageable.
I haven't heard about Dr. Nedlinski, maybe others will chime in, but make sure to ask for more than one consults. I doubt that at 2 cms they will recommend W&W indefinitely. Since you have trigeminal nerve issues, this means that already your AN has reached the root of the nerve close to the brainstem. They might recommend getting another MRI at 6 months to establish a growth pattern.
Marianna