Who prescribed this MreKPD? If it was a gynaecologist, then was there communication with your doctor? If it was the doctor, it should be easier to sort out so they can change the amounts on the repeat prescription.
On my repeat prescription amounts vary. I was prescribed only 8 vagifem at a time, just for one month, which made the pharmistist grumble as he had to break open a box, but now I am prescribed Ovestin, it always comes with the instructions to use every day for the first 2-3 weeks, whether that's appropriate or not. And I get 3 months of patches at a time. So not sure what time policy is being used at my surgery! Worth a visit to see your GP to sort this out? The pharmistist can't change things, though obviously they check for doses etc for safety.