I had the jaws moved forward. But the surgeon had noted beforehand that I had bad TMJs. So when I'm lying on my back, my lower jaw still tends to open, sitting

I had the jaws moved forward. But the surgeon had noted beforehand that I had bad TMJs. So when I'm lying on my back, my lower jaw still tends to open, sitting on my airway. So I mostly sleep on my side nowadays. And sometimes use mouth tape.