Will be glad when its all sorted

I have type 2 diabetes and was recently put on insulin as my HbA1c level shot up to 109 mmol, and my doctor decided that medication was useless, hence him starting me on insulin. My sugar levels were constantly in the high 20s at the time too. Since going on insulin, my levels have been all over the place. Most of the day still around 10- 17 mmol and can drop to around 2-3 mmol for no reason. To say I am fed up with it is an understatement to say the least. My insulin has been raised three times now, but so far without any noticeable success.