My lab will be 11 in June. He was diagnosed with diabetes 4 years ago. We’ve never been able to regulate his insulin and have tried both human and dog insulin. He’s currently taking 31 units of vetsulin 2 times a day and has been for over a year. No matter what dose/medicine brand we try, his blood sugar is still really high (between 250-400)! Recently, he’s been throwing up a few times a week after eating or drinking. The vomit is white and clear and looks like its mostly slobber with only a very small amount of food. What’s causing this?