Hello welcome to Talk Parrots!
We love pics here so when you get some of your new fid please share with us and tell us his name when you decide on what you will call him.
It sounds like your little feathered friend has won your hearts, I'm sure a lot of us feel the same way you do when you express concern about being away from your bird while you are at work. Its best you keep him in his cage while you are away at work, the cage is a safety place that he will get use to in time. He came from a breeder so he was around other birds and sounds that made him feel comfortable so in the short time you've had him his new cage is a little scary to him as its new. Any bird introduced to a new environment is usually nervous and quiet in their new cage and home at first, but the good news is he is happy to be playing and out of the cage being hands on and friendly with you. He has learned early that if he screams when in his cage he will attract the attention he wants.... YOU!
Leave a radio on when you are gone for the day so he has music or sounds to keep him company, too much quiet in a birds environment can frighten a bird as its well known that quiet in the wild means there is a predator nearby.
He will figure out where his cage is in time and will fly to it when he feels like it, if you have a flat surface on top of the cage I suggest you put up a perch of some sort or a play stand up there or maybe you can make a play stand yourself so that he can fly to it and hang out on top of the cage.
Offer him some millet or treats on top of the cage and make sure he has lots of toys to play with GCC's love toys.
This is a typical play stand you can buy at most bird/pet shops
One of our members had a twisting rope perch set up on their cage for their bird to fly to and hang out.
This member really spoiled her conure and prepared a large branch for the top of the birds cage.
There are so many things you can put on the wood branch to entice your bird to hang out there and play.
And it looks like her conure really liked being up there as well!
Another great example of a perch play stand made of branches.
A good reason for a play stand or a perch on top of the birds cage is to encourage the bird to go there to hang out and eat or play. All birds like to fly to the highest point in its room which is either the curtain rod over a window or a light fixture or standing lamp or a tall wall unit/book shelf or picture on the wall.
You don't want your bird up high and away from you in any of these places.
Many people get some "safe wood" branches and wash it with hot soapy water then wash it again with vinegar to kill any bacteria or bugs. The wood can sit for a couple of days in a bright area of sunshine to dry and cure before you put it on or in a birds cage. I bake my safe wood branches in the oven on 200°F for 30 mins to assure any bugs or bacteria are not on the wood anymore.
Here's a list of safe wood you can obtain for your birds cage. Bird; Birds: Safe, Toxic Trees, Woods. Safe Tree Wood. Parrots. Parrot cages.