I don't know if there is a complete thread on Nyah, but posts here and there on how she came out of her shell. This was the start of our relationship:
http://www.savannahcatchat.com/threads/new-to-savannahs-have-an-f2-girl.2306/page-2#post-31766
Reading it brought back memories! I also remember the first time she crawled in my lap when I had strep. That post is on here somewhere! But yes, Nyah was untouchable when we got her and we worked at her pace to get where we are today. We had to trap her in a corner to get her in the crate to be spayed, and then giving her pain meds was another fiasco. We had made some progress prior to this episode, but had regression afterward. I felt awful.
She was quarantined in our bedroom with her food in the master bath, so my husband or I would just go up there and be with her as much as possible. We didn't always try to interact, we would just read or work, just be around. It was also a lot of time on the floor while she was under the bed. She wouldn't eat out of my hand, so I would just lay some freeze dried chicken out, slowly bringing it closer to me and being careful not to make sudden moves. She started to come on the bed, and we would just freeze so she would be comfortable. She slowly started to lay closer first to my husbands legs, then on them. He was not allowed to move.
We would play with her (the wand toy was used a lot in those early days) as she started to come out from under the bed. To be honest, we never thought she would be a cat we could cuddle with, so each time she moved a little closer to us or showed affection was a huge bonus!
Nyah is quirky and always will be. She won't let my 15 year old pet her consistently, but she will hang out in my daughter's room with her. She will also fly off the bed if one of us moves to quickly for her liking, though she hops right back on. She is very cuddly with me now (in fact she is currently laying on me), but it has been a year of baby steps to get here. I can pick her up, she hates it, but I can. I will admit I am not good at doing her nails because she gets scared about it still. She very recently started to give little kitty kisses out of the blue. I am not sure if that is because she sees my other savannah lick us (he is the opposite of antisocial and licks like a puppy, he is a weirdo
) or just another step in her process of trust.
There is a lot of good advice here. I wonder if taking a deep breath and starting over might be good for you both, this time with no timeline or expectation on your kitty to be more than he wants to be. He may never want to be pet, perhaps he may only get to a point where he will just sit near you. But he may surprise you as well and decide to allow more.
Let me know how it goes for you. Oh, one more trick..Nyah still gets excited when she sees the freeze dried chicken jar, or if you ask her if she wants a Scooby snack, which is what we call them. I use the ones from halo, I am convinced they have some form of kitty crack as a secret ingredient, so I highly recommend you use them!