I don’t know what to do about my 3 year old. In the last six to eight months he’s got so aggressive and jealous. We have a 1 year old also and at the start he was absolutely obsessed with his baby sister and adored her and now it’s turned to pure hatred. We’ve tried to make sure both children have their own time with us as well as family time spent together, at her nap times we do arts and crafts or even just snuggle and watch a movie. But it doesn’t matter how much undivided attention me and my partner give him he won’t stop lashing out at his sister. If she’s sitting too close to him, he hurts her, for example at lunch time today, I had just got her out of her high chair and sat her down on the floor to clean her seat and he scratched all down her back. His nails weren’t even long. He pushes her off of us when we cuddle her and snatches toys from her. A few days ago she came for a cuddle and my 3 year old started screaming and threw himself to the floor. I’ve tried talking to my son about this but he doesn’t have the attention span for it, he’s only just turning 3. At nursery he will have tantrums that go on for over an hour, where he will just scream and try to hurt anyone that comes near him. It’s got to the point where I find myself crying because I don’t know how to solve this issue or help him.