I wish I had some advice for you, but I don't

I'm sorry your girls are acting this way. Sometimes when I go to pet Gizmo, Rocky will push him out of the way. Even if Rocky is off in his own world chewing on a toy or something, and as soon as Gizmo comes by me Rocky has to block him from me. These dogs are real protective. Rocky also has to jump at me whenever I hug my bf. If you find something that helps them not be so protective, please share