One thing I have found over and over again is that the accepted wisdom on eating is all skewed - and it had brought me close to disaster on several occasions over the course of my adult life.
To lose weight it seems logical to believe all that is set in stone by HCPs, but eating low carb but not going down in calories seems to be a very effective way to lose weight, as the body is perfectly happy to allow weightloss when there is protein and fat coming in regularly - and it burns off fats and releases water too, also shifts fat around, away from the waistline, or in my case, equator.
My waistline expands and shrinks on a weekly basis - sometimes it is a foot smaller than when I was diagnosed, sometimes only nine inches - but I expect it will settle down - I am down two sizes now, from XXL to L - most days, and it hardly feels like even trying to lose weight.
I'd advise easing up on the 'diet' mindset and see what a low carb way of eating will do, then settle on that course for a while.
I was a bit surprised to realize that I had lost over 40lb, which was why my clothes were falling off, even though I was eating fat and protein and putting cream in my coffee.