Advice Needed: Husband Does Not Believe He Has Seizures...

My husband is having night seizures. After looking all over this site I am realizing that they are most likely NON-epileptic Seizures, because I think they are caused due to the high stress he is under, being exhausted and possibly because of his blood sugar. The first one was in November and I woke with the horrible noise of him forcing air out...(not a nice noise). He was jerking around and non responsive. He also was having a very hard time breathing... and was gurgling saliva. I had no idea what was going on, so I called 911. By the time they came, he had "come to" and was extremely upset that I had called the ambulance and refused to go to the hospital. He also refuses to believe he had a seizure. Then is happened again in of the following year. Only this time he was in our basement working on something. He must have either fallen asleep on the spot (he was very tired and irritable that day) or maybe it just came on. I heard a loud "thump" and went to check on him. I found him on the floor shaking and bleeding from his head (from hitting the edge of something as he fell). This time I called the ambulance and I made him go to the emergency room but it was very difficult). He came to again and thought it was ridiculous that I had called for an ambulance and said there was nothing wrong..etc. They kept us overnight and did an MRI, EEG and Catscan. All the tests came back clear...which to him proves nothing is wrong. He was prescribed some epileptic medicine...but he refuses to take it because he does not have epilepsy...or to him seizures. Now it's July and he just had another episode the other night...it didn't last as long, but he fell into a very deep sleep after. I did finally manage to wake him (not sure if I should have or if I should have just let him sleep), and took him to the restroom and back to bed. He was really out of it. He went back to sleep after a while. The next morning he was upset that I had woken him up and he again did not remember anything that happened. After what happened in May we made changes to our diet, and he was working on trying to stay relaxed and stress-free. That night and this whole week it has been tough at work. The weather has been very hot and humid and I know he does not drink enough water with how much he sweats off at his job. I am wondering if what cause this last one was exhaustion mixed with the heat and dehydration and if in the future should I force him awake or just let him fall back into sleep once the seizure stops. Also if anyone can give me some support on how to deal with the fact that he does not believe me, or if anyone is experiencing this with their own partners.