I had surgery in 2011and my facial nerve was severed and I had the 12/7 nerve graft to help get movement back in my face. I had a gold weight implanted shortly after the initial surgery.
I only had it for a year. My facial nerve began to regenerate within that timeframe and I had pretty good closure of the eye. I'm not really sure what parameters the surgeon used to decide when I could get it removed,, I was able to close the eye well with it and open it completely ,, my situation may be different than both of you as my nerve was severed,, but I never did and wasn't expected to get movement in my forehead so that isn't necessary for eye closure,,, I still don't blink exactly as the other eye,, takes " thought" to close eye completely but don't have extreme problem with dry eye. I occasionally use eye drops but not daily,,
I hope this helps some. Just to know one person's experience,,,
Good luck to you both,,,