So I've had my GCC for about 7 months now, the place I got him from said they didn't know his hatch date but that he's roughly 5-6 months old (most of my birds are rescues but he stole my heart when I saw him) I thought if I just took the harness out everyday, he'd not get so angry at it, he'll stick his head through the wing or head loops about 3-4 times before he gets fed up, I give him a treat each time he interacts with it. How do you guys train your birds to tolerate harnesses? How long did it take?