Help

So i have a parrot named kiwi
I trained her to step up on a perch while my hand is carrying the perch
And she is great at it
But every time she steps up she bites the perch
And when i tried to make her step up on my hand she wants to step up but she will bite before so i dont make her
And i know they use there beak as a 3 hand
But it hurts when she tries to step up
Any advice to making her step up without biting