If your vegetarianism is on ethical grounds, you should learn about grass-fed and pastured animals and maybe read The Vegetarian Myth to understand the ethics (or lack thereof) of a plant-based diet.
Meanwhile, if you are hypoglycemic and new to this diet, just eat as much as you can of healthy foods. Try eating large enough meals that you don't get hungry in between. Put lots of fat in your meals. Butter or coconut fat. I love a good coconut curry from time-to-time. The fat will keep you from getting hungry as fast. Wild salmon and small fish like sardines, herring, kipper, are also excellent protein and fat sources. Eventually you will discover that you've become healed. Give it some time. I started with insulin resistance and now no longer have it. I feel great.
Female, 5'3", 48, Starting weight: 163lbs. Current weight: 135.
Starting bench press: 30lbs. Current bench press: 75lbs.