Phhh ...
there are lots of occasions when you will use more than 4 false casts to get your fly where you want it. Wind, fatigue, honing accuracy, these are all things that may call for an extra false cast or two. I have been casting flies for some time now and have found on many occasions reason to break the 4 cast "rule" that people seem to love to set as soon as they can get the fly out after 4 false casts.
If you are not getting wind knots, your fly is hitting the water where you want it, and you are not tiring out too quickly, cast however you feel you will get the best presentation. It's not a casting competition as much as some people might like to make it.
If you are casting correctly, barring crazy wind, you should be able to false cast all day without problem. Rather than rushing to try to get your number of false casts down, maybe focus on improving your form while you are false casting, it will go a lot further for you in the end. Focus on form and accuracy first, not distance. Distance will come and it is overrated in many cases.