Thanks for the advice!I would try offering baby food (for birds) in a spoon.
3 months old seems young to me to be fully weened.
young birds often regress when purchased.
Thanks Heather.I would spend time holding them and sitting near their cage. Read or talk or sing to them, just like you would with a human baby or child that you want to comfort. Or sit near the cage while you work or study. They need to get used to you being close to them.