Hi
@mandyell43 can we just pull that menu apart please because there is something missing.
Granary toast - how many slices and what does he have on it?
What does he have with his tinned salmon/tuna or is this on the granary toast?
The problem with you saying he has chicken or fish for tea is that how is it cooked (battered/breadcrumbs) and what else does he eat alongside it (potatoes of some sort may be)?
A glass of red wine possibly help with the meal.
What I suggest is write down a full days diet (include all of the little things as well such as marg or butter on the toast, tomoato ketchup...) and then we can have a look and help you both understand what is possibly pushing his levels up. I would suggest you also test just before he eats and then 2 hours after and then we will see how big the rise is for that particular meal. Do it for all meals for a day and post back.