(Resolved) Continue running one part of code while still checking other inputs?

And here is the second half of the above code. This gets pasted directly under the last part.

//Right Blinker Code/////////////////////////////////////////////////////////////////////////////////////////////////////////
  RightSwitchVal = digitalRead(RightSwitch); //read and store Right Blinker switch status
  
  if ((RightSwitchVal == HIGH) && (previousRightSwitchVal == LOW)) //compares current switch status to previous status
    {
     previousRightSwitchVal = RightSwitchVal; //sets the current status as the old status in preparation for the next check
     RightSwitchMillis = currentMillis; //sets a time stamp at the current time
    }

   if ((RightSwitchVal == HIGH) && (currentMillis - RightSwitchMillis > interval/2) && (RightPulse == LOW) && (currentMillis - RightPulseMillis > interval/10000)) //checks if the Right Blinker switch is pressed and how long it has been pressed for,
        {                                                                                                                                                        // if the Pulse was last set LOW, and if it is time for another step in brightness.
         RightPulseMillis = currentMillis; //Time stamp used to check how long since the brightness, i, was last changed
         R++; //Adds 1 to R value. The value of R dictates light brightness
         RightBlinkState = R; //Sets the light brightness to the value of i.
         analogWrite(RightBlink, RightBlinkState); //Sets the blinker brightness to the dictates level. Why I cannot go directly use (RightBlink, R), I do not know...
         }

 
  
   if (R == 255) //checks value of R
    {
     RightPulse = HIGH; //if R is maxed out at 255, the RightPulse goes HIGH. This lets R decrease.
    }


    
   if ((RightSwitchVal == HIGH) && (currentMillis - RightSwitchMillis > interval/2) && (RightPulse == HIGH) && (currentMillis - RightPulseMillis > interval/10000)) //checks if the Right Blinker switch is pressed and how long it has been pressed for,
        {                                                                                                                                                           // if the Pulse was last set HIGH, and if it is time for another step in brightness.
         RightPulseMillis = currentMillis; //if the Right Blinker switch is pressed on and has been on for more than half a second, set a time stamp for the fade in. 
         R--; //Subtracts 1 from R value
         RightBlinkState = R; //Sets the value of light brightness to the value of R
         analogWrite(RightBlink, RightBlinkState); //set the blinker brightness to the value of RightBlinkState
          }
          
   if ((R == 0) && (currentMillis - RightSwitchMillis > interval/2)) // Checks if R is at 0 so that the brightening cycle can repeate. Also checks if the initial rapid flash sequence is over.
    {
      RightPulse = LOW; //if the above conditions are met, reset RightPulse to LOW.
    }


    if((RightSwitchVal == HIGH) && (currentMillis - RightFlashMillis > interval/50) && (currentMillis - RightSwitchMillis < interval/2)) //if the Right Blink switch is HIGH but less than half a second has elapsed,                                                                                                                                 
         {                                                                                                                                 // this checks if the Right Blink switch is HIGH and more than one-fifteith
        RightFlashMillis = currentMillis; // saves current time                                                                             //of a second has elapsed since the last time previousMillis10 was reset.
         
         if (RightBlinkState == LOW)
            RightBlinkState = HIGH;
          else
            RightBlinkState = LOW; //if more than one-fiftieth of a second has elapsed since the time stamp was reset, reverse the state of the Right Blinker.
            
          digitalWrite(RightBlink, RightBlinkState); // set the Right Blinker with the state of the variable:
          }
     
          
    if (RightSwitchVal == LOW) //checks if the Blinker switch is still on or not. If it is off, the following occurs...
         {
           previousRightSwitchVal = RightSwitchVal; //makes sure the previousBrakeSwitch value is reset to off when the switch is in fact off.
           RightBlinkState = LOW; //resets the blinker
           digitalWrite(RightBlink, RightBlinkState); //Overall, if the Right Blinker switch is off, keep the Right Blinker off. 
           R = 0; //resets R in preparation for the next usage.
         }
         
 //Left Blinker Code. Identical to Right Blinker Code.//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

  LeftSwitchVal = digitalRead(LeftSwitch);
  
  if ((LeftSwitchVal == HIGH) && (previousLeftSwitchVal == LOW))
    {
     previousLeftSwitchVal = LeftSwitchVal;
     LeftSwitchMillis = currentMillis;
    }

   if ((LeftSwitchVal == HIGH) && (currentMillis - LeftSwitchMillis > interval/2) && (LeftPulse == LOW) && (currentMillis - LeftPulseMillis > interval/10000))
        {
         LeftPulseMillis = currentMillis;
         L++; 
         LeftBlinkState = L;
         analogWrite(LeftBlink, LeftBlinkState);
         }

 
  
   if (L == 255)
    {
     LeftPulse = HIGH;
    }


    
   if ((LeftSwitchVal == HIGH) && (currentMillis - LeftSwitchMillis > interval/2) && (LeftPulse == HIGH) && (currentMillis - LeftPulseMillis > interval/10000)) 
        {
         LeftPulseMillis = currentMillis;
         L--;
         LeftBlinkState = L;
         analogWrite(LeftBlink, LeftBlinkState);
          }
          
   if ((L == 0) && (currentMillis - LeftSwitchMillis > interval/2))
    {
      LeftPulse = LOW;
    }


    if((LeftSwitchVal == HIGH) && (currentMillis - LeftFlashMillis > interval/50) && (currentMillis - LeftSwitchMillis < interval/2))                                                                                                                                 
         {
        LeftFlashMillis = currentMillis;
         
         if (LeftBlinkState == LOW)
            LeftBlinkState = HIGH;
          else
            LeftBlinkState = LOW;
            
          digitalWrite(LeftBlink, LeftBlinkState);
          }
     
          
    if (LeftSwitchVal == LOW)
         {
           previousLeftSwitchVal = LeftSwitchVal;
           LeftBlinkState = LOW;
           digitalWrite(LeftBlink, LeftBlinkState);
           L = 0;
         }
         
}