If your BG is constantly high, it suggests to me that your basal dose is too low and may need adjusting.
Have you done a basal test recently?
I also find when my BG is high (above 14), I become insulin resistant and need bolus to correct (sometimes as much as twice as much as I thought).
My final idea is that your insulin to carb ratio may not be quite right and could need adjusting.
However, it is usually best to get your basal right first and then start tweaking bolus.
Good luck.