I'm so glad things are working out now! I think the turning point WAS the head butts and scratching. Since your kitty is deaf, he has to rely on scent, and maybe he didn't have a clear scent of you before. Now, he knows you are the one that takes care of him, since you gave him food and water, and he trusts you.
Just make sure if vistors come over, they know to let him come to them and sniff them first, then they can pet him if he wants it. We have a cat, Monster, that the vet thinks has tunnel vision (she also has seziures because she got into poison when she was a kitten). You can't approach her from the back and pet her like a normal cat. But, if you hold you hand down, she will come...sniff...and finally rub her head against your hand. That is the sign that you are "worthy" of petting her!
Then she can't get enough. She just has to know you first.
Bless you for taking this sweetie into your home!
Just make sure if vistors come over, they know to let him come to them and sniff them first, then they can pet him if he wants it. We have a cat, Monster, that the vet thinks has tunnel vision (she also has seziures because she got into poison when she was a kitten). You can't approach her from the back and pet her like a normal cat. But, if you hold you hand down, she will come...sniff...and finally rub her head against your hand. That is the sign that you are "worthy" of petting her!
Bless you for taking this sweetie into your home!