I have 2 vials a time, and this lasts me about 3 months ish.. I'm a bit like Dylan has my basal between 0.2-0.6 per hour and I'm not a large carb eater so don't use a lot for my bolus..
It does seem that your sugery has changed your script from cartridge to vials, just check that they is plenty of expriy date left and the should be fine, and the next time you at the doctors ask for it to be reduced to 2 or 3 vials instead (always handy to have a spare vial in fridge just in case you need to change vials for any reason)
I can remember the entry error when I used to use, vial and syringe for injecting, my insulin was changed which brought up a computer glitch... As what every surgery tried to do when it came to printing out my prescription for insulin did so in masses amount, started out with 10,000 vials, managed to reduce to 1,000 finally smallest number achievable was 100..
It was the chemist who picked it up, and asked were did I want the lorry to deliver my insulin too :lol:
The chemist was very good, and would adjust it to the right amount 1 vial at a time lol