emergency stop Millis()

Hello everybody. help me how
stop execution of this emergency led1On after digitalRead (button2Pin) == LOW
after
translate led1Pin, LOW

second
if digitalRead (button3Pin) == LOW
also urgently stop
led1On
but don't do lastButton = LOW;
until after digitalRead (button3Pin) == LOW there is digitalRead (button2Pin) == LOW

if (digitalRead(button2Pin) == HIGH && lastButton == LOW){
    timer = true;
    led2OnTime = millis();
    lastButton = HIGH;
    ledOff = true;
  }


  if(timer)
  if (millis() - led2OnTime >= 1000){
      digitalWrite(led2Pin, HIGH);
      digitalWrite(led1Pin, LOW);
      led2On = true;
      led1On = true;
      led2OnTime = millis();
      timer  = false;  
  }


  if(led2On) 
    if(millis() - led2OnTime >= 1200) {
      digitalWrite(led2Pin, LOW);
      led2On = false;
    }
  if(led1On)
    if(millis() - led2OnTime >= 200) {
      digitalWrite(led1Pin, HIGH);
      if(millis() - led2OnTime >= 5000) {  
      digitalWrite(led1Pin, LOW);
      led1On = false;
      lastButton = LOW;
        
//      ledOff = true;
    }
    }