I remember sometimes having a 'naughty' dinner ie: pizza and my night reading be fine but my morning reading being affected - perhaps this is what is happening with you having sugar in the morning with breakfast & your coffee/tea??

Definately try to do some light walking/exercise. I used to do a slow 20 minute walk after lunch & that really helped with my levels too. So, you can eat more but you are burning off any simple carbs prior to testing.

I agree with the others about the weight gain - my gf had insulin controlled GD with both her kids - her babies were born under or around 6 pounds and her weight gain was minimal. My DD was born 7 pounds 5 ounces on diet controlled GD, most of my weight gain was prior to being diagnosed then I lost weight and stopped putting on altogether. I'd try not to worry about the weight and concentrate on your levels - once you have them under control they tend to leave you alone a lot more. I ended up on fortnightly appts and maybe out to three weeks?? in the end b/c my levels were well & truly controlled even as I went along further in my pg.

Oh, and the other thing I wanted to say was stress played a part on stuffing with my levels. If I was put under undue pressure (ie: work issues) my levels would be up, the dietician you are seeing may not be helping rather hindering you.