Yeah--it would get confusing. The best method to use is in all reality is consistancy. The more consistant you are, non-wavering on how you do it, it will sink in. If you throw some inconsistancy in there, I think it might eventually sink in one way or another, but it will take a lot longer to get the point across. LO's thrive on consistancy, they like to know what comes next...it's a comfort thing.
Hope this helps!
*HUGS*
Sonya =P