Hi Kukka,
Your doctor's recommended readings do sound to be too high and you ought to try to keep them lower to avoid the quite nasty complications that can come a diabetic's way. Personally, if I was you, to start with, I'd be aiming to get your fasting 'on rising' level below 7 and to certainly be trying to keep away from going into double figures after eating.
The first bit of advice that I give to any Type 2 such as myself is to cut down on the starchy carbohydrate that you eat - i.e. cereals, bread, potatoes, pasta and rice etc. That usually leads to a big and quick improvement in blood glucose levels.
Best wishes - John