I eat my evening meal at about 7:30pm and don't eat anything until my lunch the following day at around 1pm.
Should I simply measure my "before lunch" and also count it as my fasting level (would only have drunk water up until then)
Or am I missing something?
Thanks
This depends on wether like many T2s, get dawn phenomenon.
If you do, then doing the fasting test before lunch is preferable.
If you don't, then as long as you test at the same time every day before food, then you can see if your fasting levels are getting better.
However, if you know by experience what your fasting levels are, the pre meal, two hours after are a better guide to how you are progressing (or not!)
Keeping a food diary, with a lot of detail which includes your dietary intake, readings, carbs, and symptoms, portion size. Will help with your doctor decide on any treatment needed and of course dietary advice.
Keep safe.