Jenny... one can't just titrate weight loss against blood sugar levels as diabetes is a very personal disorder and more importantly, fat loss as a means of lowering blood sugar is a very contentious issue amongst doctors.
Diet to lose weight by all means but don't be disappointed if your blood sugar levels remain the same.
Pasta.......that link describes how blood sugar levels might effect BUT the OP is asking how weight affects blood sugar levels, quite a different question.
This is yet another example of general fat phobia. I know several people, all skinny, who are diabetic. I was borderline diabetic, I stopped eating bread, pasta, rice, grains, beans, sugar and after three months had completely reversed it, and my levels are now normal. It seems like A sacrifice, but it really isn’t. Most of my meals consist of protein, vegetables, and the odd keto snack. It was incredibly easy to get it down, but I have to say I didn’t really lose much weight.
Barry, i have also reversed my type 2 and i also eat pasta, wholemeal bread, rice and beans (haricots, cannellini, black-eyed beans, etc) in water. I also eat lots of fruit and veg and i use sweeteners in my tea and coffee.
Jenny,
much smaller portions, get in to wholemeal bread over white, up your veg, fruit. I have switched to soya milk, the most palatable I've found .. Tesco soya drink unsweetened .. add your own sweetener if preferred. Why a switch to soya? Compare the differences in sugar content. Greek 0% yoghurt .. again add sweetener to taste & some frozen defrosted fresh fruit berries of choice. Yep, some may pull me up for sweetener use, but that's my personal choice. Olive spread for a sandwich, it tastes o.k on a sandwich, not on toast though. Small switches are up.