Lately my 6yo has been hitting, pushing or throwing things at his 20mo brother. Is this normal? It’s usually over sharing, cleaning up, or something that the oldest has to do and youngest does not. I’ve tried explaining the age difference to no avail. (As in you’re older and have diff responsibilities)

In general my 6yo has had an attitude, gets angry, and has been throwing temper tantrums. It’s been over the last few months but getting worse. He never ever used to be like this. He was always such a sweet boy. He claims “no one likes him” or “everyone is mad at him” when these things happen.

Any advice?