Hi Mark, brittle diabetes, as you know, comes with a variety of symptoms. More imformation would be needed for anyone, medical staff included, to state whether this and other symptoms mean that you have brittle diabetes.
You do however, on the list and times of readings, show that you have a sudden drop of bs around and about the time when the actrapid is peaking. (this is aaround 4 hrs after injecting).
Are you giving yourself a correction dose? If you are then I would stop this as this would obiously add to the low bs.
OK, another thing that struck me was that you are attending college. Are you drinking coffee from the drinks machine? Even unsweetened coffee from these machines makes my blood sugar rise to about 17, quite quickly too. Its just a suggestion, but also check any bottled water for added sugars or fruit sugars?
I would like to suggest more to help but feel that you need to speak to a diabetes nurse first.
However, I wouldnt consider that you have brittle diabetes just on the information given. Please let us know how you get on?