Hopefully you can work with Lilly and reduce the amount of calling to you. Other than the noise, which is perfectly normal for cockatoos, she seems loving and gentle.
Yes I’m working on it everyday ! She’s amazing other then the calling trying to do anything I watched almost every YouTube video
I am probably late in the game here, and it may have been said already, but here is what worked for me-- and it took months of consistency for it to stick.
If you leave the room,
1: talk to your bird BEFORE the screaming starts.
2. Use key-words to help them anticipate what you are doing and time-frames. If I will be gone for 1-3 hours, I say "going to the store". If it will be the majority of the day, I say "going to work"--I do this every time.
3. Once the screaming starts (excluding fear screaming which has a totally dif sound), DO NOT attend to your bird in any way until it stops for a set period of time. Start with 5 seconds. Do not look at her, do not talk to her, do not talk about her, and do not re-enter the room if you are not already there. When there is a break in screaming, count 1 Mississippi, 2 Mississippi, 3, Mississippi, 4....5..... If you get to 5 Mississippi and she has been silent that whole time, immediately return, praise and say something like "thanks for getting quiet-- using a quiet voice yourself. Do this for a week or 2 until it's not THAT hard to get through the 5 seconds. Then up it to 10 seconds (or start at 10 if 5 is too easy). Any screaming in between 1-5 and/or 1-10 restarts the count completely.
Plan ahead so you aren't having to go back in the room to get things because you do have to wait it out--coming back in (even to grab your phone) mid-attention-scream fest is rewarding that behavior. You might also invest in some silicone/putty earplugs because 10 seconds can be a challenge initially...at least it was for mine.
Now, at least at my house, she never does the hour long scream-fests she used to do when I got her if I left the room.
Everyone has to follow the same rules--- don't ever tell a screaming bird (who is screaming for attention) to be quiet or anything-- even eye-contact tells them that by screaming they got your attention.
4. Also, make sure your relationship with your bird is not inadvertently sexual. This can increase their "obsession" with you but it can also lead to screaming, aggression and self-destructive behaviors long-term. Pet only on the head and neck and do not allow your bird to access shadowy places in or around the cage (hormonal triggers). Do no allow under blankets, clothing, piles of paper, in boxes etc.
5. Make sure you are teaching your bird to play--model the behavior (playing with toys etc) and reward your bird with attention and a treat whenever you see him/her playing with a toy...at least initially while they are learning.