Can anybody observe you sleeping? Sleep apnea can cause stressful dreams. A sleep study can help or maybe a take home sleep study.

Also, hypoglycemia can cause stressful dreams. You can try eating a complex carb snack before bed. Here in the states, we have a food called Glucerna that is formulated to last a long time. It is sold for diabetics but also works for people who struggle with low blood sugar.

Low blood sugar can also be a cause of your collapses.

MCT Oil can also help. It is Medium Chain Triglyceride Oil that the brain uses when blood sugar is low.

Hope this give you and your doctors some things to look at.

My best to you.