I'm useless on this subject. DS1 and DS2 never fight. That's because DS1 is a total peacemaker (AKA pushover). There are ample conflicts between the other three kids! But I'm terrible at it. I usually handle it by just "taking away" what ever is being fought over and I'm sure that's not always the fair solution. I find these things utterly exhausting but I know I'm not solving anything by wishing these conflicts away. I'm looking for books, blogs, instagram accounts or what have you that might help with this.
Thank you!