I don't think it's the food because they were almost at the bottom of the bag, meaning they have been working on in for over a month. However, just in case I tossed out the rest of the bag and bought them a new bag of Innova. Thankfully Pocky hasn't been showing any signs of being sick. However today I was super excited when Corkscrew ate a few bites on his own which means that I might be able to cut him down to just two force feedings a day.