My son is 18 months old. He has always been.... challenging 🤦🏼♀️ but recently his behaviour is just uncontrollable. He smacks, bites, pulls hair & when we tell him off he screams bloody murder. Usually a happy child, he has recently become so miserable. He wakes up In a vile mood and won't go to bed at night without a fight. It's draining and I am fed up. I'm wondering if it's too early to introduce a naughty step? He understands when he is getting told off and also I am sick of shouting. It's tiring. I want another baby but can't until his behaviour is sorted. Help