Thank you for the advice.
@KennyA
So today I did the test as follows:
Fasting: 5.2
Right Before food: 4.7
After food (2hr): 5.1
So that is a 0.4 difference, which from your information suggests a good result.
My question is:
My food only had a content of 20g carbs (Salmon, avacado, lettuce...