You need to figure out why this bird is screaming.
How much time do you spend with it, is it tame, how old is it, how
big is its cage, how long is it in its cage throughout the day, do
you have toys, any new toys, more toys now, how about now? These
birds NEED ENRICHMENT, THEY ARE SMART, he will nee dplaystands
also, and A GOOD DIET, so what are you feeding him, has he seena
vet, is he near a window, HOW BRIGHT IS THE ROOM, where is his
cage located inside the house, WE NEED MORE INFO