Low-carb for diabetes is a lifestyle, not a "diet". Carbs affect your blood glucose more or less immediately; if you did 3 days on, 3 days, off your bg levels would be all over the place (and you wouldn't lose any weight!)
The odd day, eg Christmas, birthday etc, won't hurt, as long as they're not too frequent, but you're now into controlling carbohydrates for life. It's not too bad - there are still lots of nice things you can eat. Keep testing to see how various foods affect your bg levels and you'll soon work out an eating plan for yourself.
For example - I had a cheese omelette for breakfast today; lunch will be tuna salad with mayonnaise and lots of salad veg; supper will be roast turkey with broccoli, cauliflower and leeks. I might have a couple of oatcakes (5grams of carb each), a bit of cheese and a few nuts if I want a snack.
That lot will give me about 30 - 35 grams of carbohydrate. You'll notice I'm not on a low-fat diet - my choice, it suits me but it doesn't suit everybody.
I might add a small serving of peach slices, in fruit juice, with cream as a rare treat,which will up my total carbs for the day but which doesn't seem to affect my bg too much.
I've also found that my real favourite, Green & Black's 85% proof chocolate, contains less than 2g carb per 10g. I sometimes have that just before bed and it seems to keep my bg stable overnight.
So you see, low carb isn't deprivation - it's just thinking outside the box!
