I already have exceptionally cheap, and highly effective Continuous Glucose Monitoring.
Using it, I can quite happily take a result every fifteen minutes. (The cost is around 2 or 3 pence each time.)
But I find that around once per waking hour is just fine.
Moreover, I don't have sore fingers.
For I never ever have to use those nasty, viscious, snappy spring-loaded gadgets to get a blood sample!
Instead, I gently jab the side of my finger with a bare lancet - just as I have done for 30 years.
And rather than bother with a flaming meter all the time, I mostly use visually read strips. (
http://www.betachek.com/uk/)
Each strip can be cut with scissors into four striplets.
And that makes my Continuous Glucose Monitoring very good value.
My last three HbA1c readings were 27mmol/mol.
But my diet is crucial too. I couldn't safely get such readings with a normal diet.