Hi Claymic,
I can't be much help regarding weight since I've never had weight problems. It is only when my T2 must've started that I accumulated visceral fat, as my body fat redistributed. So now I have a skinny bum (it is uncomfortable sitting on hard surfaces) and stick like legs, but w rounded belly.
As far as I understand the biochemistry, the hyperinsulinemia resulted in my body accumulating visceral fat. This is not the subcutaneous fat, but fat that accumulates around the internal organs.
After a number of years I have moved to insulin and tbh I regret not having done it earlier. I haven't put on weight and I don't think insulin will contribute to weight gain because it lowers my BS which in itself reduces insulin production by the pancreas, reduces the hyperinsulinemia which causes the fat accumulation.
Of course, what and how much you eat matters. The more carbs or larger meals will lead to increasing weight. Insulin only addresses the carbs you have eaten.if you eat a big cake, you'll need more insulin to make use of it. And we all know that cake is weightgaining food.
As for being on insulin, once you learn, it can give lots of freedom (within certain bounds) and better quality of life. I know, the promoters of the keto diet had a go at me today, but I do not believe that causing my body to react to extreme and using up only fat with ketones as byproduct, is healthy. Also, I do not believe in extreme dieting, which potentially cases more harm than good. And lastly, I am in control, not the diabetes, and I finally have quality of life.
It is a personal choice and any treatment plan should be personal, fitting individual needs. As a nurse I rather follow NICE guidelines. Biochemistry and metabolic processes are extremely complicated with many effects on different areas of the body. I believe that keeping the body functioning closest to normal is best. Insulin injecting is closest to what should be happening in a healthy person.
Anyway, wish you luck. You will find the right treatment for you, I'm sure.