Hello
@Faith_exx ,
Type 3 is a relatively new descriptor and I can understand why you were discharged from hospital as Type 1 some 20 years ago. In some respects it is of little concern, T1 at least ensures that your medical records always show you as insulin dependent and you get medical support as if a T1 in accordance with the NICE Guidance Note 17, recently updated.
www.nice.org.uk
Regrettably T2 diabetics don't get such strong support, so better to be recognised as T1 than T2. The proportion of T3cs is, indeed, very small; less than 1% of all diabetics in UK, but it does seem to (gradually) becoming recognised a little more as a distinct Type and the significance is the other things that one's pancreas might provide. So apart from no (or minimal) insulin production and no digestive enzymes there is probably no glucagon - the hormone that should tell your liver to open the glucose store when your brain recognises that your BG is low (the brain can only communicate with your liver through the pancreas!); also no hormone somatostatin that plays a co-ordination role between insulin and glucose. You've been doing these tasks manually, ever since your pancreatectomy.
If you haven't come across it to date, there is a book called "Think Like a Pancreas" by the author Gary Scheiner. Although he is from the US he has made a lot of effort to provide European units as well as US units with virtually every numerical example he's provided. I've found it very helpful; Scheiner is himself T1 and the book is focused on insulin dependent diabetics.
Delighted your Libre serves you well and with accuracy. My body seems to rebel a bit against the sensor - but despite this I wouldn't choose to be without the extra overview that Libre 2 provides. I have my alarm set relatively high, close to the upper limit of 5.6; my D is categorised as brittle and I certainly can crash quickly if I'm not paying attention. So once the alarm sounds I look at the number and the trend arrow and get ready to scan more frequently if necessary. I now rarely get into hypo territory; by monitoring and responding with modest snacks, eg a 6 CHO gm biscuit, I seem to successfully head off hypos.