I'd be nervous about shooting something if he's still going to be this low at PS time. The problem with doing a one time reduced dose, is that the depot can still make the reduction cycle an exciting one, at least for the first part of the cycle. And he likes to nadir early if he starts lower at preshot. If you do shoot, maybe 2/3 dose, I'd still give him higher carb foods and maybe load up the autofeeder for +2 and +3 with some higher carb food too. Another option would be to do two back to back 18 hour cycles. So you'd shoot at what would have been his +6 tonight (2 hours after you get home), skip tomorrow morning, then back on schedule tomorrow night.