Re: Type 1 or Type 2, how do you know?
A c-peptide (which shows insulin production) and an antibody test are used to determine type 1. Often people who acquire T1 in adulthood are able to do well for a while on oral medications. This version of T1 is often referred to as LADA (Latent Autoimmune Diabetes of Adulthood). Eventually the person islet producing cells fail and then insulin is required on a permanent basis.
In a way, being on insulin is easier than having diet controlled type 2. If you have T1 and eat more carbs than normal, you simply take more insulin to keep your sugars stable. Or take an extra shot if your sugar happens to be high. T2s don't have that luxury and have to live much more strictly.
From what you described it is more than likely that your husband does indeed have T1 and will be on insulin eventually.
Good luck and keep us posted on how things are going.
Dxd T1 1966, 2001 dialysis, 2002 kidney transplant, 2003 insulin pump, 2008 pancreas transplant