Hi Mandy welcome to the forum
I test in the Morning before breakfast and then in the evening before my evening meal . I then check 2 hours later .
i am sure other check in different ways, just see what suits you and your shift patterns
passed couple of days my Blood sugar as gone up slightly from the evening reading to the Morning evening.
on the 5th June my evening reading was 6.1 and in the morning was 6.4
on 6th June my evening reading was 5.1 and this morning was 6.3.