Wie verzögere ich das aktualiesierungs interval eines sensors?

Als Beispiel 2 LED mit unterschiedlicher Frequenz blinken:

const int ledPin1 =  13;     
const int ledPin2 =  12;     

int ledState1 = LOW;            
unsigned long previousMillis1 = 0;     
   
int ledState2 = LOW;            
unsigned long previousMillis2 = 0;   

long interval1 = 1000;      
long interval2 = 800; 

void setup() {
  pinMode(ledPin1, OUTPUT);    
  pinMode(ledPin2, OUTPUT);      
}

void loop()
{  
  unsigned long currentMillis = millis();
 
  if(currentMillis - previousMillis1 > interval1) {
    previousMillis1 = currentMillis;      
    ledState1 = !ledState1;
    digitalWrite(ledPin1, ledState1);
  }

  if(currentMillis - previousMillis2 > interval2) {
    previousMillis2 = currentMillis;      
    ledState2 = !ledState2;
    digitalWrite(ledPin2, ledState2);
  }
}