Interesting. I'm not sure what to make of the #s. I wonder if maybe he is going lower overnight and then bouncing up to the 400s for the AM shot. Since the PMPSs are so much lower, maybe the dose is too high for that. Might be worth trying 1.25 for a couple days and see how things look. Is it possible for you to get a bedtime check in now and then? That would help fill out the picture a bit to have a little data in the nighttime cycle. Alternately though it could be that the dose is too low and you will need 1.75, or it could also be the feeding pattern like you've been discussing. Hard to say for sure - if it were me I think my starting points would be to get a little data at night, try the lowered dose to rule out dose being too high and see if that evens out the PSs, and of course I'm a free-feeding fan, so I'd just put out the food bowl and go to sleep!