How to handle prompt alerts in ionic native

Ionic Framework ionic-v3
1

Requirement - user confirmation for otp sent i am giving option for user to resend the otp for second time until user exceeds the counts i dont want to close the prompt alert. here is my code -

let prompt = this.alertCtrl.create({
      title: 'Verification',
      enableBackdropDismiss: false,
      inputs: [
        {
          name: 'otp confirmation',
          placeholder: 'Enter one time password',
          type: "tel",
          id: "confrminput",
          
        },
      ],
      buttons: [
        {
          text: 'Re-send OTP',
          handler: data => {
            //How to handle here
          }
        },
        {
          text: 'Confirm',
          handler: data => {
            //confirmed - if wrong how to handle without closing the prompt alert.
            
          }
        }
      ],
    message: "Please enter 6 digit OTP code sent to your mobile number",
    });
    
    prompt.present();
  }