LWC lightning-input-field 個別 reset

  retLightningInputField(fieldNameStr){
        const inputFields = this.template.querySelectorAll('lightning-input-field');
        if (inputFields) {
            inputFields.forEach(field => {
                if(field.fieldName == fieldNameStr) {
                    field.reset();
                }
            });
        }
    }

ちなみに、checkBoxでの切換え

HTML:
<lightning-input type="checkbox" label="新規" name="activate" onchange={handleCheckboxChange}></lightning-input>

<lightning-input-field field-name="Name__c" disabled={isPatientNew}></lightning-input-field>

JS:
    handleCheckboxChange(event) {
        if (event.target.checked) {
          this.isPatientNew = true;
          this.retLightningInputField(Name.fieldApiName);
        }
    }