Step up your handling. Wolfie has way too much freedom. He needs to look to you for direction, not take things into his own paws. Seriously, take control, show him you are his world and he needs to look to you for all decisions. It won't take him long to understand(practice NILIF)
This is the age most dogs get rehomed/dumped at shelters because the dog is becoming independent in their thoughts and don't really know how to decipher situations due to immaturity. It is up to the handler/owner to step up and show the dog they have the dogs world under control...giving the dog relief and confidence in the handler.