I'm 30 weeks and 3 weeks into diagnosis. It was really hard at first, but I've started to get in to the swing of what my body can / cannot take.
Breakfast is usually the hardest for me - I have found protein on 1wholemeal toast (egg, cheese, ham etc) works best for me. A tablespoon of granola and low fat yoghurt sent me sky high the other day, as did 2 weetabix with skimmed milk and sugar!
Wholemeal pitta and chicken/avocado salad for lunch, fish and baked sweet potato/loads of veg for dinner. I still snack on fruit between meals (apples, pears, berries are best for me) or carrot sticks and hummus. Peas etc I'm still ok with.
My fasting results are usually really good, before bed I have a treat of a glass of milk and a rich tea biscuit. Aldi also do mini 25g 85% cocoa dark chocolate which has low sugar in which I have as a treat.
Do you have a diabetes clinic? I have to go every 2-3 weeks, and just had my first. Dietician signed me off when I explained what I was eating and blood readings - she wanted to make sure I was still getting calcium so don't panic about milk until you've Seen how you react. She also asked about a multi vitamin and confirmed I should still take this - though I tend to take at night now rather than the morning.
Best advice I had was to keep a food diary - I religiously write down everything which has helped me quickly work out what is good for me.
NICE clinical guidelines are to induce no later than 40+6, and if I can still keep on top of bloods with diet and scans are still ok, lots of movement etc then I'm hoping to avoid an early induction. Not least I want to work to 38 weeks! But as long as baby is Ok, that's all that matters.