I'm so sorry that Miko isn't feeling better

Poor little guy!
Have you tried giving him this formula?
http://www.yorkietalk.com/forums/sho...a+hypoglycemia
My poor Luna's blood sugar level was at 46 when we rushed her to the ER vet the night after we got her

The nutrical wasn't working at all. Read the link above for the whole story.
Praying for Miko!