First of all, Welcome to GG and Congrats on your new baby.
Go up under the Gliderpedia and look up Nutrition or Diet (or both) and you will see several recognized diets that many on here feed.
Your vet is offering diet advice out of a Veterinarian Manual in which information on how they feed at various zoos is given.
Many of these are outdated or have ingredients that many leypersons can't feed or have access to.
I'm not saying it's a bad diet, I personally have never heard of it, but you have easier and less expensive feeding options.
Check it out and then hop back on with any questions you may have, and again, Welcome!
