Cause it's really so difficult to say
Nathan :|
I would've thought
Nathan would be pretty nn proof, except for Nath, I automatically shorten a name to its first syllable and sometimes add -y or -s. But
Nat and
Nate aren't glaringly obvious nn's, and hsould be avoidable. I'd just say "
He's called
Nathan" every time they try. The only way I think it's unavoidable is if he himself decides to go by one of those nn's. otherwise when he gets old enough he should saying "My name is
Nathan" right along with you. Eventually most people should get it.