Of course it's possible. Actually it makes complete sense :p If you do something so much then you are doing it in a mechanical way, without thinking about it, not being aware enough while you are doing it. I think the way this works is you do it so much, that it becomes something uninteresting in your life, hence you don't dream about it. For example most of my time I spend it on the computer, but I almost never use a computer in my dreams. Also, belief plays a huge role in LDing if you believe that you will not LD because you did too many RCs , then you will not LD.

I'd say cut down a bit on the RC's, maybe five a day, once every 2 hours(it's up to you, but this is what I read works for most people). Also, make sure you are aware of everything around you while you are doing it and make sure you don't even think "there's no way this is a dream". Act like you are probably in one and question everything.