Help with basal testing time slots

Skip breakfast, and as you've fasted overnight (unless hypo), keep testing till lunch time. Another day have breakfast and 4 hours later you can start your basal testing for that time. There aren't any rigid time slots, it's just a matter of covering 24 hours over a few days. Sometimes if my bloods are stable, I'll start at midnight, another time 2am if I've eaten later in the evening etc.