Lithium toxicity long term symptoms

Hi,
Just chasing some advice about Lithium toxicity. I'm Recently recovering from serious toxicity. It's been about 3 weeks bit I'm still feeling like $#%^, tremors have subsides but I still have some hand tremors, shakiness and weakness in my right wrist and hand. My doc said that it'd going to take time, especially considering my toxic levels.. but I'm becoming concerned that some of symptoms are still hanging around the shaking ttemor muscle weakness in particular . I'm worried that I may have done some permanent damage to my CNS..Has anyone had any experience with this?
Thank you in advance