I researched hypoglycemia in dogs. It is common in smaller breeds especially Yorkies. Buddy is a yorky. It has a lot of the same symptoms as Cushings, so it could have been overlooked. Lethargy, muscle weakness, wobbly gait, to name a few. One of the main symptoms of hypoglycemia is FACE TREMORS! Buddy's tremors are head tremors. His whole body does not shake, only his head vibrates. I'm going to pick up a bottle of Karo syrup and rub some on his gums the next time he has a tremor, to see if that helps. I can't give him honey due to allergies. I have that on hand. His vet might know something about hypoglycemia. It is obvious they don't know much about Cushings. I'll call Tuesday to get his vet's schedule for the week, so I can take him in one afternoon after work. In the meantime, I will give him smaller meals more often.