Hi David,
Wish I could help you on this one. Jake seizes whenever... There is no "time" of day that is worse then another.
BUT, I do know how hard it is for the parents to sleep knowing that it could happen and/or is happening. We put Jake in bed with us during his cycles. But, this is getting harder as he gets bigger - he takes more bed then his Daddy

Do you have a monitor in his room. I know he's older, but Dad might feel better knowing it's there. If your son thinks it's a baby thing, maybe move the bed around and place it close to the head of the bed on the floor.
Another good book, by the same author is Seizures and Childhood Epilepsy a Parents Guide. If you can't find them in your local book store (we couldn't) they can be ordered online @ Amazon.com
You and your family are in my thoughts and prayers as you try and work through this.
Hugs to you all and Happy Labor Day!
Lisa and Kids