Indian Ringneck going wild on me?

[Porkemon]

My 1 year+ semi-tamed Indian Ringneck went wild on me THRICE this year even though I gave him attention and interacted with him, when the wildness happened, he just went bonkers at my hands but still recognizes my face, which is quite surprising.

The most recent one happened about a few days ago, I managed to get him back by somehow covering his beak with my palm and making the mmmuacks sound, which is what I always do to him whenever he wants me to pet him.

It all suddenly happened, he will start to back away or run away from me even though I did nothing to him. I had to "sacrifice" my hands just to get my buddy back, It was heartbreaking for me to watch my buddy losing trust on my hands.

He was extremely terrified of hands in the pet shop when I first saw him, even small movements freaks him out.
Is there anyway I can get him to forget his terrible past of other people's hands?
How can I avoid this sudden terrified, wild behavior next time? TIA

[Lizz]

When he started to back off why did you continue to go after him?

[Wolf]

I really need more information about what is happening in order to sort out what is happening and why. There is always a reason for whatever it is that they are doing. It can be difficult to understand the reasons for their behaviors because they do not think the same way hat we do, they are prey animals, whereas we are predators.
Give me as much detailed information about what their life is like from dawn to when they go to bed at night. Please include the times that they get up and go to bed, what their diet is like and how much out of cage time they have as well as how much one on one time they get. Do this and we may be able to help you get things back on track and prevent this from recurring.

[Pajarita]

Yes, more info is needed but what you describe is typical IRN behavior. These are not easy birds to keep tame and loving. It requires expertise on the human's part and lots and lots of daily interaction at the right times.