Hello Birdiegril,
I'm not certain what you mean. Is your Doc ordering you less tablets or has be reduced your dose? Either way I would simply contact your Doc and ask why he made the change. As your title indicated this simply could be a mistake.
I think you need to know the facts before you can take any action. Contact your Doc and go from there. Please feel free to update us - you'll do our best to offer suggestions.
Good Luck,
~Tuck