He is 3, 3 can be way worse than 2. He is more aware of his feeling but really still young to express them with full understanding so instead he reacts. He is also reacting to your moods. If you yell his reaction will be either to shut down and cry, or to become more excited and also yell...
He is also second fiddle to a new sibling (in his own mind). His parents are upset about the death of grandma and mom is not her usual self. He needs more attention with the new baby, but if that does not happen, he has learned that he can get their attention by being defiant. You can turn this around by having him help you with small things and giving him lots of praise. The more you do this, the more natural it will feel and the more he will crave the GOOD attention and recognition. "I need to wash the clothes, please bring me all of the big hanging towels from the bathrooms." "I just washed these clothes, help me fold the towels." "I like when you are my big helper." "I need help putting the clothes in the dryer, please come and help me." Then have him help transfer the wet clothes to the dryer.. Or have him help pull the dry clothes into the laundry basket. Have him hang up clothes on the hangers, have him button all of the buttons zip all of the zippers..
He is being made to potty train and may really not be ready yet with everything else going on. Imagine someone just telling YOU stop, go to the potty now. Hurry up and go potty, I want you to do it now... It has been 3 minutes go. I know I would not be able to do this, so why do we think kids can perform this way.When he is ready, he will lead the way and it will happen so quickly you will be amazed. Maybe give it a total rest for a month or 2. Our daughter really wanted to go by being at daycare and seeing her friends go.
So how can YOU be the one in control? What will it take for you to get to this? Do you need to find a new medication? Do you need help in your home? Do you need t lower some of expectation for others till you can be in control of your own feelings? If the adults in the house do not have it together, children are very perceptive, they will begin to react.
Children also thrive on schedules. They want it and feel safe with it..
3 year olds want to be big helpers. They also do not stop on a dime to do what others tell them, instead they need a few transitions, with a heads up.Also choices will allow him some control over the things YOU are willing to give him.
Example brushing teeth, "in 2 minutes we will go brush your teeth."
"Do you want the spiderman tooth brush or the blue sparkle tooth brush?" "Do you want me to sing the twinkle twinkle song while you brush or the abc song?" "Ok my turn, you brush my teeth, Ok now I get to brush your teeth.. "This sounds like a lot of time, but once this is the routine, brushing teeth will take 2 minutes, 3 at the most, but with no tantrums..
He does not want to eat, then he can sit there till the rest of you are finished, but no snacks till the next meal or he can wait till breakfast.. He will nor starve.. No comments or reactions. If he has a fit, ask him to go to his room, or carry him to his room and tell him he may come out when he quits crying.. Then DO IT. If he comes out and is still crying, tell him he is allowed to cry in his own room.
Do not react to his drama. You set the tone and expectations in you home. It takes a lot of control on your part That is why you need to figure out what you need first before trying to change everyone else. I have been on antidepressants for a long time and sometimes they need to be changed or increased or decreased.. Mental health is a change in the chemistry in your brain.. as we mature, we have different needs, Listen to your body.
Your family deserves to have the best of you and you deserve to feel good and be happy.
I am sending you strength.