At first, please only practice for up to 2 minutes. As your dog gets very used to this, you can Dremel longer. As always be very attentive to your dog’s body language.
For MANY dogs, “one, two” will actually be a better place to stay for a long time than “one, two, three.” Please only use “one, two’ three” if your dog really doesn’t mind.
Always remember to go at your dog's pace. Some steps will be slower than others, other steps will go quickly! Watch your dog for signs of stress or avoidance, and go back a step when needed. If your dog is doing well, stick with this step for several practices! If you take the time now to build positive experiences and associations, your progress will be solid.