start code from the begining .How?

Using Arduino Programming Questions
12

I think you're trying to complicate something that is really simple!

const uint8_t   pinLED  = 13;

byte incoming_IR_data;

bool check_IR()
{
    // Some code that checks IR and stores data from Infrared to
    // incoming_IR_data variable

    if ( incoming_IR_data == 12524 )
    {
        return false;
    }
}

bool task_2()
{
    bool    result;
    
    result = check_IR();
    if ( ! result )
    {
        return result;
    }

    ...

    return true;
}

bool task_1()
{
    bool    result;
    
    result = check_IR();
    if ( ! result )
    {
        return result;
    }

    ...

    return true;
}

bool task_0()
{
    bool    result;
    
    result = check_IR();
    if ( ! result )
    {
        return result;
    }

    ...

    return true;
}

void loop()
{
start:
    if ( false == task_0() ) return;
    if ( false == task_1() ) return;
    if ( false == task_2() ) return;
}

void setup()
{
    pinMode(pinLED, OUTPUT);     
}