is this true? the more u do MC the longer it takes to get results?

HI
is this true that the more times you do Master-Cleanse the longer it takes to get results?

this is my 3rd 10 day MC. the first time I got great results within 10 days,
the 2nd time I got pretty great results but not as good as the 1st time. Now,
I am on my 3rd cleanse (day 9) and it seems like everything is taking longer... getting
more energy, feeling overall better, and losing weight. Each Master-Cleanse I do the same thing. This time I may missed a drink or 2 of the lemonade but everything else the same. Has anyone else noticed this to be true?