I am so glad you found this site. Members here are really friendly and supportive which I hope will be helpful to you over the weeks ahead.
Apparently it is quite normal for the tongue to be numb as they have to cut some nerves during surgery; I was told that the feeling may come back over the next 18 months. It's really strange because one night while I was in hospital my tongue was very painful and I could tell that they had cut it, but after that it went back to being numb and I have felt no more pain in it at all. It doesn't cause any real problems except that sometimes I find myself chewing on it while I eat. I should have said - its only the left side of my tongue that is numb. I can't really stick my tongue out properly any more, but as my GP said that is a small price to pay!
I think it is similar about my neck. A little bit of feeling has started to come back as I can now feel my ear lobe which was numb before. I was lucky again in that my neck dissection caused very few problems as I know some people do have problems afterwards.
I think someone has mentioned this on another thread, but I found the worst bit of the operation was having a tracheostomy and not being able to speak for a few days, but fortunately that was soon over.
Please let us know how your husband gets on - I will be thinking of you both tomorrow. Won't be able to post for a bit, though, as I am away fro a few days.