I think it will help a little, but because he has had so few dog-to-dog experiances to fall back on, someone needs to be getting him out every single day to meet and mix with dogs - all types of dogs too - not just dogs his age/size, dogs of all sizes, colours, ages and breeds etc. At the moment, Major's experiances are pretty negative if Bella is constantly telling him to bug off, he needs many positive interactions too as well as lots of mental stimulation - training, etc.