I have no idea about the protein shakes.. I'm sorry. =(
I've actually decided to order a 2 month's supply of that Adrenal Rebuilder myself... I've been using a cheaper, low quality adrenal extract from the local health store with my regimen for the past month.. and it hasn't worked anywhere near as good as Dr. Wilson's did. I remember feeling really great when taking the Adrenal Rebuilder in September-October, and that was when I wasn't even on the hypoglycemia diet! So I'm pretty sure adding it back to my program would speed up recovery even faster.
Good luck, and yes, definately keep me informed! =)