Frankly, I haven't had similar circumstances on this. One of the issues is how much he isn't eating. When he eats nearly a full can of catfood - as he has in the past - there's no question about his dosing.
But lately it's taking me nearly two hours to get him to eat less than what he used to eat.
This morning his AMPS was a lovely 141. On Djamilla's recommendation, I gave him a wee tiny dosage of just .25.
Food-wise, after two different cans and following him around all morning, I think he finally might have eaten about 3/4 can. But there was no guarantee that was going to happen before I left. And I quite literally spent the majority of my time trying to get him to eat.
Also, one thing he's doing, that he hasn't in ages, is going under the table. He will eat if I warm the food, put it under his nose, and continually scoop it around in the bowl (and occasionally stroke him encouragingly). But this is so close to last fall when he stopped eating completely that it's scaring me a bit.