We do what {sarah} does, wake him just before he would usually start a terror. This worked for a little while. We also found it went in cycles and thankfully only happens every 6ish weeks for about 2 weeks then nothing for 6ish weeks. The only advice I can give is to make sure the area around him is safe. Brendan thrashes around his bed during a terror and can cause himself an injury if left. Also once the terror has started it's better not to wake them (in our experience anyway) not only is it difficult to anyway, but if woken can make things worse.

It's so hard