Hello
@Davidleonard56 and welcome.
I am not medically qualified, so my opinion is just that - a layman's opinion and potentially quite wrong! That said I suspect any decision to alter your diagnosis from T2 to T3c is not really in the gift of your GP. You need to get back to whoever looked after you when you had the abdominal Surgeries, particularly the gall bladder removal (HPB?) and have this discussion with them. Presumably your T2 diagnosis originated with symptoms of high BG. What diabetic symptoms have changed and are you still on oral meds (ie still treated as if T2)? Is that treatment no longer helping? With your multiple medical problems it is probably unreasonable and / or unrealistic to expect or hope that your GP can draw all the strands together and make different inroads that help you manage your diabetes.
Some 12 months after my pancreatectomy, I was still having multiple comorbidity probs and was fortunate enough to still be in contact with the HPB Dep't that had removed my pancy. A Consultant from that HPB recognised my dilemma of having very poor diabetes management and referred me to a Centre (in a different County) that specialised in 'unusual' diabetes and which had a track record with various artificial pancreas trials. That has proved to be a brilliant change (albeit causing some friction with my existing Endo and DSN team in my local NHS Trust; strange reaction on their parts - they weren't actually helping me, but resented my leaving them ... ?! I'm sharing this with you to illustrate that unusual arrangements for better medical cover can be achieved .... they just need the Patient to be prepared to politely but firmly say "HELP!" to whoever will listen - against the platitudes of "you are doing OK' ,even when I clearly wasn't really doing OK. My GP wasn't helping (I suspect couldn't help and essentially out of their depth) and it was down to me to reach out wherever I could.