At the end of the day it's up to you, how often do you test your blood (i.e. how many test strips you get through (£££)) and you relationsip with your doctor.
I'm newly diagnosed, so I'm probably not well enough informed to advise you, but I'd go back to the GP and try to get a supply reinstated on prescription. Explain your concerns and convince him/her that you will not be using the strips extravagantly. If you test just once a day, or ONLY when you feel unwell?