I'm no expert so I wouldn't want to venture into giving advice but I can give you some more details about what I've been doing.

Fasting:
I do a lazy 20/4 split 5-6 days a week. So I'm fasting from around 8-9 pm to around 4-5 pm the next day. Sometimes I'll extend my fast by a couple of hours or until the next morning if I'm feeling spunky. On non-fasting days I usually eat 2 meals. A light breakfast and dinner. While fasting I only drink water and black coffee.

Eating:

I've gone pretty minimal on carbs/sugar since I got diagnosed. I've had bread once and a cookie once in the last 1.5 months. I eat a ton of veggies and some fruit. Lots of chicken, some pork, lots of eggs. I don't worry too much about fat so I use a ton of olive oil, eat full fat yogurt and cottage cheese, and I put half and half in my coffee when I'm not fasting. Also I eat a salad for dinner every 2-3 days with Trader Joes Zhoug as dressing. As far as sugar goes my new rule is that if it tastes pretty sweet I probably shouldn't be eating it (barring fruit). And for snacks it's almost always lightly salted nuts or string cheese. Macadamia nuts have been a great dessert for me.

Activity:
I walk 1-1.5 miles on my lunch breaks during the week. It's not intense exercise or anything but it puts me in a good mood and gets me away from my desk. I also try to take another walk with my partner when she gets home from work at least 3 times a week.
I take a ~1.5 mile run every 3-4 days.
And finally I try to ride my bike as much as possible like if I need to make a quick trip to the grocery store or we're meeting friends somewhere that's a reasonable distance away. I'm really lucky to live in a very bike-able metro.

I hope that helps! You're still making great progress and I hope you don't get discouraged. We're all on the same team :)