Welcome to the Parrot Forums! And, just as wonderful, Welcome to the Wonderful World of Amazons.
As stated above, please read and re-read the Thread regarding Amazon Body Language. It is very important to know the Language of your Amazon, as they expect you to know what they are saying. So, you 'need' to learn Amazon. Also as stated above, Reading aloud too your Amazon is a great way to develop and grow a relationship. Even if you are doing nothing more then sitting next too their cage.
A really good knowledge point is: Its NEVER the fault of the Parrot! IT IS ALWAYS the fault of the Human! When you start from this position, you more quickly determine what YOU are doing Wrong and can fix it faster!
Take any timeline that you may have read or hear and dump it!
Rehomed Amazons, will hold back to see if you are for real or just another passing Human. However, if you learn their language and follow the knowledge point, they will open-up to you and I assure you that Love from a Rehomed Amazon is Deep and Forever!
Thank-you, for bring an Rehomed Amazon to your forever HOME!