Hi my boy is 3 years old still breastfeeding, I'm trying to stop but he starts crying and stops only when I give. He doesn't make eye contact properly. If he wants something he starts crying. Sometimes he laughs for no reason. But otherwise he plays with his elder sister and repeats her and copies her. He even helps me. He can sing most of the rhymes and answer our questions like a for apple. His other activities are normal. Is it normal or should I consult a pediatrician.