A: Yes, absolutely. Whenever you feel like you need to have a snack or some protein, that's a really great idea, and make sure that you listen to your body.
It seems that you do better with a solid breakfast than a liquid breakfast. Just to clarify, I know we have some breakfast options, like the Adrenal Kickstart, which is a breakfast drink. However, for breakfast, I often recommend smoothies, which contain fat, protein, and fiber. I don't consider that a liquid breakfast per se.
Smoothies should provide enough blood sugar balancing nutrition. As for eggs, they are wonderful if you tolerate them well, as they can be really great for your blood sugar and brain function.