It can take over two months for the cycle to complete. Continue with the daily water changes. If you havent already, i would do a 90-100% water change since the ammonia is high, taking care not to splash water onto the filter from the tap.
Keep using prime, it is saving your fish. Use a biological starter as Byron suggested but i recommend buying an expensive one. In my experience, cheaper ones only help with the nitrites and not ammonia. Check the expiry date when buying the product, fresher ones are more likely to work.
What is your ph? Any ph lower 7 will actually make ammonia not toxic to fish. But it is dangerous to alter ph unless you know what you are doing.
Feed your fish 2-3 pellets/flakes each once every two days. No more than that till cycle completes.
Plant or leave floating in the tank heavily with fast growing plants. As the plants grow, they will absorb ammonia. Make sure the plants you buy are compatible with your water parameters particularly temperature, gh, ph and light intensity.
If you are really tired of the daily water changes, rehome your fish and let the cycle run its course.