You can easily find a breeder, if you do research and ask them, who will sell you a hand fed baby that is not fully weaned yet.. This is the best way to get the bird to bond with you and your family.
I purchased a green Quaker parrot years ago which had just started eating millet seed but still needed a couple hand feedings a day for a few more weeks. All you need is the baby bird formula and feeding syringes.
Let your entire family be involved with feeding time. Then the bird bonds strongly with all of you and should never regress as long as it is held, petted, scratched, and otherwise interacted with on a regular basis.