As I think at 1.5 yrs old he would be past his bluffing stage. Sounds to me lutino might be trying to rule the roost and boss you around. His headbutting your mirror indicates to me he might be in a "coming of age" time and sees his reflection as another intruder in his domain
Depending on where you live, is it breeding season there?
You could try rewarding his good behaviour towards you with food or toy. When he tries to bite you, give him a command to stop, can be "STOP", "NO" or "ARH HA" or whatever you like. Try making your voice in a short sharp firm tone to show you mean business. The moment he stops what he is doing (most likely out of shock you dared interupted him lol) when you give the command, reward him with his treat. You will need to keep doing this everytime until he realizes that command means to stop what he is doing. Also even though it is hard, don't react or pull away when he lunges and bites, as in his eyes he has won and bluffed you making him YOUR boss. lol
It will take a bit of time if he has gotten away with it for some time. Animals don't need to get away with anything many times for it to become a habit.
Hope something here helps you and lutino.
Good luck.
He runs head first at my mirror too lol. He is very lucky hes only in his cage at bed time. Hes not bored or hungry but i dont know why he is so aggresive towards me!!
