That is exactly what I would say 🙂 Have a look and see what the patterns of your daily readings are telling you - you might notice that you are higher or lower at certain times of the day - these are the areas you can make adjustments for as you gain more experience.
I was looking through my first BG diary the other day and was surprised to see how long I was on fixed doses I was - it was actually about 3 months, although I had made some adjustments on the DSN's advice early on. My tendency was to go low rather than high, although thinking back I think I would deliberately take more insulin with meals to allow for snacks later on i.e. I would have a little bit more than I knew I needed to cover breakfast so that I would need a mid-morning snack to prevent myself going low, and so on through the day and evening. It was when I noticed that I was needing bthese snacks earlier and earlier that I realised I needed to reduce my doses. This conveniently coincided with my diabetes education course, which taught me about carb-counting and ratios etc.
So although you may feel as though you have been on fixed doses a long time, it's not actually that long! 🙂 You'll get there, I have no doubt. 🙂 Look at the changes already - down from regular 17-19 to 7/8/9s! Actually, it is considered better not to get your levels down too quickly, as this can be detrimental, as the body tries to adapt - a slower downward progression is preferable.