I apologise for misreading and misquoting. I'm sometimes a bit too hurried. Your criticism is very fair.
Here's a quick edit, however: The point I was making remains the same. Never mind about just 'two hours afterwards'. I want to be sure that my blood-sugar does not go above 7 at all, if I can help it.
I'm not sure what 'DU' stands for. But anyway, I get my guidance from experience, and from reading.
I can't remember the professor's name at the Elsie Bertram Diabetes Centre in Norwich ('Mike' something), but he did once tell me that my HbA1c readings are as good as, or better than, a lot of people who are non-diabetic.
When I wrote "If you want to add sugar, ..." I should have written "If one wants to add sugar, ...". That was certainly what I intended to mean. However I do apologise for my carelessness.
As regards weighing, measuring, calculating etc., I have certainly noticed on this forum that people seem obsessed with doing that. (I believe that's a function of the poor professional advice they get.) But my blood-sugar control is really very good indeed, without the need for any of that.
Again, I apologise for being a bit careless. And I'm very happy for you, or anyone else, to point out any mistakes that I might have made, or to make any criticism.
I'm a bit Aspergerish, incidentally: I show features of Asperger's syndrome, that is to say. Accordingly, I'm really quite obsessive. If I notice any mistake in what I've written, I will immediately endeavour to rectify it with an edit.