Amerigroup GA

This is my first post here. So try stick with with me and my rambles. First off, I'm a 22 year old female with a BMI of 46 plus multiple health issues. Those include Pre Diabetes, Multiple Strokes, Hypertension, Severe Iron Anemia, High Cholesterol, And Kidney Disease. My doctor has mentioned that I get gastric surgery previously. (The Sleeve)

Up until recently i was unable to afford it and my Healthcare Marketplace insurance didn't cover it. (I'm in Georgia)

As of a few weeks ago, my husband was laid off so we were able to get Medicaid through the state. Does anyone know the steps to get approved the fastest with Amerigroup? I will probably only have the insurance for 4ish months. Can my doctor go ahead and sign off on the supervised diet? Since I've been trying with their consent and help for over a year? Any help or suggestions on how to get the ball going as fast as possible would truly be appreciated.