Input using the same key twice

ok what i am trying to do is to get user input using the same key two or threes time to go though a selection process. What i got so far works to a degree but when i press the H button it just continuous on its merry way and not asking for input the second time. I tried Input.GetDown and Input.GetKey both dont work. Im using a if statement would a switch be better? Thanks for any help with this

Here is the code for the selection process

 if(Input.GetKeyDown(KeyCode.B))
     {
                         //this set timescale to 0
             sliderError = true;
             Debug.Log("B " + errorS);
     }
     //make the choice
     if(Input.GetKeyDown(KeyCode.H) && !errorS)
         { 
 
             //Time.timeScale = 1;
             sliderError = false;
             correctionSelect.enabled = true;
             errorS = true;
             //deploy = true;
             
         }
         
     if(Input.GetKeyDown(KeyCode.H) && errorS)
         { 
             Debug.Log(errorS);
 
             Time.timeScale = 1;
             sliderError = false;
             deploy = true;
             
         }