6 months post surgery and still have numbness

Hi everyone, I had carpal tunnel surgery on my right wrist on April 4th and on my left wrist April 18th. My surgen performed the WALANT method which I was very pleased with. I still have mild numbness, especially when sleeping, even though I do wear a splint. Is it normal to still feel some numbness after this long? I have seen the surgeon about a month ago and he said my finger dexterity, strength, etc are all good so that this is just taking time. Is this correct?
Thank you all for any input.
Gary W