Looking at Taz's chart, in my opinion, I think you don't have much to worry at the moment as far as him dropping too low, especially with the recent reduction. His #'s look pretty safe since the drop from 2u to 1u. 1.25u may even be safe but I would ask your vet after sharing his #'s with him since the reduction.
We have to leave ours most days after her AMPS for 6-9 hours and have similar worries. If you are really worried and don't mind spending about $50 on an auto-feeder that has portions to fit a frozen ice cube (and the cleaning that comes along with it)... that could help. By the time it thaws out, hopefully Taz's lower BG will have him walking to the food.
If you're only gone 2-3 hours, I have found no issues leaving unfrozen wet food out despite the bacteria concerns. It would be so nice if there was a low carb pate created that could safely sit out for 8 hours.
What also helped ease our worries is to buy one of these small cameras from amazon (search wansview wifi camera), it's $30. Really easy to setup and it just plugs into an outlet. You can even setup movement alerts (we have one showing her litter box and another where she hangs out during the day with her food bowl).
Good luck, Taz! We're rooting for you