Cockatoos are such a sensitive breed. and example of this is that I have recently had to put a brace on my wrist and it completely freaks out my LSC2 when I wear it. I have to take it off for her.
It takes time, be patient. Keep your too in its safe zones for now and interact with it in those zones. I would not try to force the issue. Wait until it is completly comfortable with you and the zones and try to expand it a bit little bit by little bit.
an example of this would be something like your too likes to come into the car with you. Just try to sit there for a while and then turn on the engine and leave it running for a few minutes. See how your Too reacts to this. Give it a treat when it does well and praise it lots!
We have 2 nervous birds in our house and we have made progress, it just takes time. Don't loose heart, just love your too.
All the best to you and your baby,