Moyamoya treatment

In March I was seen at Mayo due to a TIA affect to the brain. At that ti, I learned of another TIA took place affecting a much larger area of the brain. I have total occlusion of the right carotid artery and total occlusion in the brain. The left side of my brain is feeding the affected side.
What treatment(s) have fellow Moyamoya patients had. When does the Moyamoya team opt for bypass surgery in neck and brain? Newbie here wants to know.