You need to have structured, regular play with your miniature schnauzer puppy.
One walk a day is good exercise, but not enough to help you both bond.
Instead, buy a big bone, or fill a Kong full of treats and hold it while he chews. This is how animals bond in the wild.
Try and maintain eye contact while he’s chewing; it really feels like you’re both sharing!
Miniature Schnauzer - Dog Lover