The adolescent phase is destroying me

My formerly perfect puppy turned into a MENACE at 9 months. She forgot every command she knew. Stopped coming when called. Started chewing furniture again. Pulls on leash. Jumps on people.

Its like someone replaced my sweet well trained puppy with a feral gremlin overnight. Everyone warned me about the adolescent phase but I thought we'd be different because we did SO much training early on.

Nope. Nobody is safe. Not even the good puppy raisers.