From what I understand about ketosis strips, you should only use them once per day, and then, try to use them at the same time each day.

If you read trace/negative in the morning after just waking, and then the next day, you read dark/positive at 6:00 after a heavy workout and o carbs for a meal, the readings are not going to accurately compare to one another.

Choose a time of day when you can use a strip at that same time every day and go with the read that you get with that one strip daily.

You're only going to confuse yourself, I think.