hum...we are all crazy to some extent
The ammonia from fish keeps the bacteria fed. Fish pop can also feed cuc and detritivores. But, fish pop is just food that has been 'processed' through the fish's digestive system. So, the food comes out with a little less nutrients then when the fish ate it. So, if you are already feeding cuc and corals, I think there is nothing to worry about here.
Since it has been fallow for so long, I'd keep going for the full 14 weeks. Only a little more time to go and since you've waited so long, you wouldn't want to add fish and then have a break out occur and have to start from the beginning, all over again.