Watchdog : How to disable watchdog during the start.

I am using 328P with arduino. I enabled watchdog in the setup() .I reset it in the loop. but when once the watchdog reset is hit. it needs to be disabled as said in other threads. But I am not able to do so. please guide me.

#include <avr/wdt.h>

void setup() {

  wdt_disable();

  // put your setup code here, to run once:

// my setup code here

wdt_enable(WDTO_8S);

}



void loop() {
  
wdt_reset();

  
// my code here.

}