This is interesting.
It may be worth pointing out that there is no way you would be expecting to get blood glucose rising within 20 mins of a meal of scrambled egg, mushrooms and bacon. They are all foods that release much more slowly than 20 mins.
If I ate that meal, I wouldn't expect to see a bg rise for... um... approx an hour. Maybe 2-3 hours. And then the rise would be from protein, not from carbs, since it is basically a carb free meal.
Which leads me to speculate that maybe the drop you are experiencing 20 mins after lunch, is a result of the high you got after your toast/porridge breakfast. Which would mean that you were already plummeting towards a hypo before you ate your eggs and bacon.
What do you think,
@Lamont D ?
Do you see what I mean?
You can test it, if you like. Don't have the carbs for breakfast. Have the bacon, egg and mushroom instead. Then test like a hawk all morning. If that protein meal doesn't give you a hypo at 20 mins after eating, then my suggestion above many have merit.
(Of course, I may be completely wrong. But running these little self experiments allows you to map out what is happening, and will, in time, give you an excellent understanding of how YOUR body reacts, in its own unique way, to the food you eat)