regular vets can sometimes help in an emergency situation but they just don't have the required knowledge in dealing with birds and will not be able to give you much help for any kind of assistance.
I am lucky to have an avian vet within a ten minute car ride from me. Other members are not so lucky and have to take a long journey to see an avian vet.
It would be best if you can establish your closest avian vet and take Milo there, even using a friend. Yes, he will be scared but it's good to have that first check up.