Hi Angela. I can't offer much help but I am in a similar situation . I'm only 2 and half years in, swapping tonight from gliclazide X 4 daily to long and short acting insulin. Not sure if the needles and rules etc are the same over where.you are but here the needles are tiny. The needles I was prescribed today are 6mm but in know you can get various sizes!! Also, with regards to driving, I've just been told to inform DVLA and my insurance company. You're not supposed to drive if you're under 5 so need to test before driving.
Like I said I can't offer much help but hope this has helped a little.