I have a 3 yo and 5yo. Both girls. Just short of 2 years between them. Both very different people. Eldest is all about fairness, rules, but can get very angry and the youngest tries to get around every rule, is very socially clever and knows perfectly how to annoy her sister.
There is no physical violence. They have the odd pinch of each other or a sly kick on the couch but nothing major.
It's the arguing. It NEVER STOPS. They find every single opportunity to drive each other mad. They can't be in the same room without arguing. I am refereeing dozens and dozens of arguments over every tiny thing all day every day. I am a teacher, secondary school, so behaviour management is something I have experience with. Over the years I have tried the tough approach of non negotiable consequences, time outs, going to their room, and positive reinforcement, reward charts, more at their level conversations about "we try to be kind" etc. Nothing has worked. It all ends in screaming (mostly them. One benefit of my job is I can fake patience forever and push anger down to the depths). Myself and DH are drained. Living with them is becoming intolerable. My own home is a place of constant feeling of eggshells, wondering what argument is next, trying to avoid it. Now it's starting to eek out into when we are at family's houses etc. I need to do something.
Had anyone had any success with a consistent approach with sibling girls with a pretty small age gap especially?