M.P.
There is a lot more to night nursing than hunger. He needs reassurance that you are still there and will comfort him. I hate when doctors or anyone tell you that your baby isn't hungry. Only your baby knows his appetite and what he needs. A baby's wants are a baby's needs. I have a 16 month old who is just now sleeping through without needing to be nursed. Maybe it took her longer than some babies, but I wasn't going to force her to adapt to what I had in mind for her. She needed to nurse at 2 am for whatever reason that I will never know. She's probably as healthy and happy as she is because of it. Plus, it will affect your supply by cutting out a feeding.
Good luck and enjoy your son.