my son 2.9year old he was not gaining weight and he became sometimes very angry sometimes very loud what to do

A. Namaste Mom, Their would be behavioural changes as they are growing , their enviornment around them also plays a role , they observe a lot. apart from.that it is also a time of building habits and decipline in the child. at times of this behaviour , get to the height level of the child , have a eye to eye contact, and avoid shouting or hitting them , instead talk to them , let them calm down . teach him but dont preach .