you are in soil, so feeding every time is possible only if the nutes in the soil are exhausted and you treat it like a soilless substrate from that point on.
1.3-1.5EC, 10% runoff waste each time. well-balanced nutes needed. still wait for top 1" to dry before re-fertigating.
the nutes in the soild need to be supplemented before that point, so it's difficult to say exactly what you'd need until those nutes are used up. even at this point you can fertilize more often, but it needs to be a lower concentration than a less frequent application. 1.3-1.5 EC less any guesstimation of what is in the soil. this does not include anyting tap water adds.