You came to a good place to get some answers and I find a few questions embedded in your posting. I'm not a physician, but I have had diabetes for ~35 years.
Often we diabetics will lose weight if our Blood Sugar
s are running consistently high. The reason is that, since the Sugar
is "swimming" in our Blood
and not nourishing our other cells (muscles, skin, organs), we urinate out lots of calories taht we consume.