Aggressive, lack of interest,

I understand your concern. First you need the understand the underlying cause behind this aggressive behavior ? Is the environment at home is aggressive  ? Parents fights a lot, parents fights in front of the child, this is how parents scolds the child or when he is unable to do something this is how parents teachs him the lesson  ? TO UNDERSTAND IT IN BETTER CONSULT A PSYCHOLOGIST. Meanwhile what you can do is Stay calm whenever your child is showing emotions (aggression or irritation) Don't do mirror imaging of the emotions. Don't give into aggressive behavior or tantrums easily because it's like a reward for them. Recognise and praise your child whenever going had a good time with him. Try to understand his pattern of behavior and his triggering points.