Welcome to the forum
@LisaC42 , from another late starter.
I label my profile as T1, although I was diagnosed as LADA. It makes no difference to me since as
@Inka says this is just a slower onset of T1 in adults, and one that starts later. it is common for use to be misdiagnosed, as the destruction of the beat cells is slower. It is often some sort of illness that will normally raise glucose levels and so increase the need for insulin. At this point the remaining beta cells go on strike and just can’t cope with what they are asked to do. It is not the illness at that time that ceases the Diabetes , it it does trigger more severe symptoms and in some cases lead to Diabetic Keto Acidosis (DKA)
life become a lot easier once you get the correct diagnosis but there is still a lot to take in at the start. I found this forum a great help in so many ways. Whatever questions you have, just ask. Nothing is considered silly on here.