How to get the value of a timer.

Question

Hello everyone.
I want to turn the LED on and off with the push button, if I want to hold it down after 3 seconds the LED will turn off, if it has been pressed for less than 3, the LED will blink.

I am using TIMER2, but after 3 seconds the LED still does not turn off.
Please help me. B

#define led 17
#define button 13
#define DEBOUNCE_MS 150

unsigned long waitTime = 1000; 
bool ledStatus = 0;
bool lastButtonStatus = 0;
bool buttonLongPress = 0;
unsigned long lastChangedTime;

#define MY_TIMER            NRF_TIMER2
#define MY_TIMER_IRQn       TIMER2_IRQn
#define MY_TIMER_IRQHandler TIMER2_IRQHandler

static uint32_t my_timer_seconds;

void MY_TIMER_IRQHandler(void)
{
if ((MY_TIMER->EVENTS_COMPARE[0] != 0) && ((MY_TIMER->INTENSET & TIMER_INTENSET_COMPARE0_Msk) != 0))
    {
        MY_TIMER->EVENTS_COMPARE[0] = 0;

        // Increment the second variable
        my_timer_seconds++;
    }
}

static void my_timer_start(void)
{
    // Reset the second variable
    my_timer_seconds = 0;
    
  NRF_TIMER2->MODE = TIMER_MODE_MODE_Timer;  // Set the timer in Counter Mode // 0x4000A000
  NRF_TIMER2->TASKS_CLEAR = 1;               // clear the task first to be usable for later
	NRF_TIMER2->PRESCALER = 6;                             //Set prescaler. Higher number gives slower timer. Prescaler = 0 gives 16MHz timer
	NRF_TIMER2->BITMODE = TIMER_BITMODE_BITMODE_16Bit;		 //Set counter to 16 bit resolution
	NRF_TIMER2->CC[0] = 10;                                //Set value for TIMER2 compare register 0
	//NRF_TIMER2->CC[1] = 250;                               //Set value for TIMER2 compare register 1

	NRF_TIMER2->INTENSET = (TIMER_INTENSET_COMPARE0_Enabled << TIMER_INTENSET_COMPARE0_Pos);
  NVIC_SetPriority(TIMER2_IRQn, 6);
	NVIC_EnableIRQ(TIMER2_IRQn);
	NRF_TIMER2->TASKS_START = 1;  	  
}

static uint32_t my_timer_get_ms(void)
{
    // Store the current value of the timer in the CC[1] register, by triggering the capture task
    MY_TIMER->TASKS_CAPTURE[1] = 1;
    
    // Combine the state of the second variable with the current timer state, and return the result
    return (my_timer_seconds * 1000) + (MY_TIMER->CC[1] / 1000);
}

static uint64_t my_timer_get_us(void)
{
    // Store the current value of the timer in the CC[1] register, by triggering the capture task
    MY_TIMER->TASKS_CAPTURE[1] = 1;
    
    // Combine the state of the second variable with the current timer state, and return the result
    return (uint64_t)my_timer_seconds * 1000000 + MY_TIMER->CC[1];
}

static void gpio_init () 
{ 
    nrf_gpio_cfg_input (button, NRF_GPIO_PIN_PULLUP); 
    nrf_gpio_cfg_output (led); 

}

int main (void) 
{
		uint32_t err_code;
    bool     erase_bonds;
		int t=0;
		err_code = app_timer_init();
		APP_ERROR_CHECK(err_code);
		my_timer_start();
		//my_timer_get_ms();
	// err_code = ble_advertising_start(BLE_ADV_MODE_FAST);
    APP_ERROR_CHECK(err_code);
	//	MY_TIMER_IRQHandler();
    gpio_init (); 
	
    while (true) 
    { 
			
       bool reading = nrf_gpio_pin_read(button); 
  if (!reading ) 
		{ 
		nrf_delay_ms (DEBOUNCE_MS); 
	if (!reading )
		{
		nrf_gpio_pin_toggle(led);
			
		}
  lastButtonStatus = reading; 
  lastChangedTime = my_timer_get_ms();
	
  }	
 
	if (my_timer_get_ms() - lastChangedTime > waitTime) 
{ 
    buttonLongPress = reading;
    lastChangedTime = my_timer_get_ms();
		
  }
  if (buttonLongPress == true) 
		{ 
		
		
				ledStatus = !ledStatus;
				buttonLongPress = false; 
				if(buttonLongPress==false)
						{
			
								nrf_gpio_pin_set(led);
								nrf_delay_ms(10000);
								nrf_gpio_pin_clear(led);
						}
  }
		
    } 
}

elow is my complete code.