So my girlfriend has this dog, a miniatura Schnauzer. He's 5 years old and in perfect health. For some reason, he fears even the slightest elevation. The dog is quite athletic but behaves as if he was much older. He does know how to get on things, like sofas that are not very high, but if we forget to "rescue" him he will literally never go down. Which is cute but also a bother. I wanna make him a bit braver and more independent. Any ideas?