To discipline a blind and deaf dog, work to eat is a great approach, it can be incredibly difficult to exercise a dog who is both deaf and blind so environmental enrichment is absolutely necessary to lower anxiety and tire out the dog’s brain. Don’t feed any food out of a bowl and make sure all the dog’s calories come out of toys or by hand in training. Giving a dog frozen stuffed Kongs on the mat will help build the dog’s duration on the mat. If the dog rolls the Kong off the mat, lure the dog back to the mat with the Kong.
Condition a marker, you’ve got to come up with a touch somewhere on the dog’s body to let him know he’s getting it right and that’s why he’s getting the food. Touch the dog in exactly the same way and in the same place each time, condition this marker just like you would if you were charging a clicker, touch/food, touch/food as randomly as possible.
Target train, teach the dog to touch a target with his nose, scent the target so that he can find it, this is an excellent way to lead a dog around so you don’t have to be hauling him around by his collar all the time. Training behaviors, with a dog who is both deaf and blind, lure/reward training is the way to go, lure the dog into a sit, when his butt hits the floor, touch him in his “clicker spot” to let him know he got it right, give him the treat.