Hi and welcome,
These numbers you are quoting are quite high, and of course the frequent urination is a symptom of high blood sugars. The pricking and tingling sensation could be anything, but can be associated with high blood sugars over a period of time (neuropathy). If you manage to gain control and reduce those blood sugars down to normal, the tingling should disappear, or at least improve.
My advice is to buy a blood glucose meter and test strips. Once you have this you can use it to help you moderate what you are eating that may be causing your high levels. By testing before you eat and again 2 hours after first bite and looking at the rise in levels from before to after, you can tweak that meal by either reducing the portion sizes of the carbs or eliminating some completely.
You say you are eating a healthy diet. I wish I had a pound for every time a newcomer says that.
Unfortunately carbs are seen as being healthy, especially the wholemeal varieties, but as far as blood sugars are concerned, they are anything but healthy. The NHS and other food advisory agencies haven't discovered this yet! Also bear in mind there can be genetic factors at play as your father has T2.
Perhaps if you give us some idea of what you typically eat in a day we may spot something to help.. Meanwhile I'll tag
@daisy1 for the very useful information given to newcomers.