@Annie25 and @Uff_Da, I've got a pretty similar story, although I was diagnosed a couple decades earlier.
Diagnosed Type 2 at 40 (13 months ago), went very low carb as a way to manage BG, and started losing weight terribly rapidly. Same story as you: the weight loss is what got my primary care doctor concerned enough to actually refer me to an endo, along with three "non detectable" fasting insulin tests and eventually a positive antibody test. I also have started eating more carbs to stabilize weight, but my BGs have been creeping back up the last couple of months. I see the endo next month.
Unfortunately, I don't think our story is at all uncommon. I imagine there are a lot of "Type 2s" on insulin out there who are actually Type 1s and think they just aren't managing their BG as well as they "should" with diet and exercise. We have an insanely inefficient and incompetent medical system, in many ways.