Starting to get wonky numbers may actually be a good sign. It sometimes indicates that you're getting closer to a dose that will bring some good insulin responses. I'm going to make a stab in the dark here and guess that his nadir is around +5 or +6, so anytime you can grab a test in that range it might help catch some more of those blues. Any chance your weekend would let you run at least a mini curve? There are a few options: one is to test every two hours for the whole cycle. That's what is traditionally meant by a curve. Other people do a +3, +6, +9 test. You can also just curve around the most likely nadir, so start testing at +4, then +5, +6, etc. until you start to see a rising number. That version gives you some time earlier and later in the day when you aren't tied to the house, and still has a high chance of capturing what you need. I find the side-by-side tests to be really helpful in finding the nadir. It does move around sometimes, but it at least gives you an idea of the time you're most likely to catch the lowest number.