Hi John,
If you have sleep apnea that could be a lot of the problem because lack of sleep along with stress are the 2 main things that can trigger sz. for a person.
When you have you sleep study done make sure that the Dr. is doing a e.e.g. and a e.k.g. at the same time you are having the sleep study done. I was told to stay up all night before I had the study done and this is what really helped my Dr. find out that I was having sz. in my sleep 1-2 hrs. before I would wake up each day.
Also if you use a cell phone often that has been known to trigger sz. for some people. I found out about this when I noticed I was having a lot of sz. when there were many people around using their cell phones at the same time and I ended up having sz. My Dr. did a e.e.g. on me and I didn't know it but during part of the e.e.g. she purposely had staff use their cell phones and each time they did the e.e.g. wave spiked up high. This showed that I was cell phone sensitive meaning that the frequency the cell phones are using are triggering sz. for me. Thanks for keeping me posted. I wish you the best of luck and May God Bless You!

Sue