No ammonia going in and there is nothing for the bacteria you are trying to grow to feed on and grow. No waste going in for your test to detect.
Fish food is a really bad way of dosing ammonia IMO
. You need to be throwing as much food as a tank full of fish will eat every day for several weeks to cycle a tank.
Your options are.
1. Do a fishless cycle properly. Dose much higher levels of ammonia either with food, a cocktail shrimp, ammonia or an aquarium specific ammonium chloride product. This will likely take another 6 to 8 weeks to cycle your tank.
2. Move your fish and do a fish in cycle.
Do you know how to cycle a tank?