1. He is used to both my boyfriend and I...I do spend much more time with him though. He has recently decided to try to lunge and intimidate my boyfriend at times. Sometimes he does nip, other times it is just a threat. He does this to me as well, but not nearly as often. Usually I ignore it, if he will not stop I have been putting him in a cage for time out (this is a different cage from the one he sleeps in. I was worried he would see his sleeping cage in a negative way if he went there for time outs).
2. I work from home so this spoiled guy is never in his cage. Other than our play sessions he mostly sits out on the lanaion on a play gym with our black capped conure (Oscar). They are so cute. So eager to get outside each morning. When they want in they run over to the window and knock with their beaks

3. This is my first time hand raising a bird and so I am taking it slow. Sky is now down to one daily feeding in the evenings. When he is outside he is quiet and sings with our other bird, however when I bring him inside he lets out his "hungry" scream very loudly over and over. If I try to give him formula other than in the evenings, he plays with it and jumps away. The screaming does not stop. I try pellets, seed, fruit, veggies, and sweet potato mash...he snubbs them all and wanders around with his loud scream. I can sometimes get him to stop if I distract him with a toy. Do I ignore this cry or try to figure out what he wants?
His loud sassy-ness reminds me of a spoiled 2 year old child. From everything that I have read this seems a little too early for the bluffing stage. I want to make sure I do not spoil him and get the point across that he is not the boss. How can I do this?