I would be very cautious about fruit smoothies, if I were you. If you can test your blood sugars then it will be a good idea to do so because you may find that they send you sky high.
Personally, I just ate normally. I didn't follow any particular diet. I just kept an eye on the carbohydrates and tested before and 2hrs after meals (on the basis of one test per day .... slow to get information, but wasn't unworkable for me). Rather than looking at how much my blood sugars went up after meals, I simply to tried to be within certain ranges
1) Before meals --> 4 - 7 mmol/L
2) 2hrs after meals --> 7 - 9 mmol/L
3) Avoid <4 mmol/L (hypo)
4) Avoid >10 mmol/L (hyper)
Luckily for me, I usually fell into those ranges, but when high, I just went for a walk and it always came down.
Anyway, back to food! I ate regularly (breakfast, midday and evening) spreading the carbohydrate intake. Breakfast consisted of either porage or toast (not always the best for most people, but I was ok with that). I controlled how much I had, of course! Midday, was usually a single slice of toast with something (half a can of baked beans or mackerel in tomato sauce). Evening, was just bog standard meals (meat and three veg), but often included quorn in the form of quorn chilli. Occasionallly I had rice with that but very small quantities. Usually, I had three small new potatoes and various vegetables.
Note that my carb intake was not low by most people's standards, but it worked for me because I could see what sent me high and what didn't. I quickly learned that any form of granola was to be avoided at all costs! Even though it is something I really like!
Finally, I did get a bit 'anal' about things and set up a really comprehensive spreadsheet which calculated calories, carb, protein, fat, salt etc for every meal I cooked (I usually cooked from scratch post-diagnosis ... no ready meals or take-aways ..... much!). Another spreadsheet was used to record my ongoing weight loss (in the form of a downwards roller-coaster) and when my final weight target would be reached (with pretty graphs and everything!). I don't do that any more, it got rather tedious.
Andy
🙂
p.s. I did eat fruit, but only in the form of an apple, clementine, banana on their own. Maybe one or two a day as snacks or 'puddings'