Thank you for the reassurance, Brett and timbuck2.
I'm honestly panicking a bit at the moment with all the talk about it dying. I don't really know what to do. I can fly back to Sydney if I have to, but my god that is something that we really can't afford right now - in terms of additional time off work and money

*Edit: I've been looking online at nipple grafts (mostly in women) and to be honest, a lot of them look similar if not worse than mine at 3 weeks. It seems like at the 6 week point, they should be pale and scarred over, completely healed. I'll take some comfort in that - it may just be a slow process.
Will keep updating.