It can be dangerous if you ignore it. Many people do. They don't cut down on anything and act like nothing is wrong. There is nearly always trouble down the line if they do that. Other people reply on the medication and think that it will sort everything out for them, but they will end up needing stronger and stronger medication if they don't help themselves.
You don't seem to be ignoring it though and appear to be very interested in looking after yourself. That probably puts you in a small percentage of diabetics who seek to do something. Most probably you can stabilise things and/or even improve things. Watch what you eat, lose weight, be more active. Actually, it's not just diabetics who should do that, most people should, but how many do?
Nothing happens very fast, so you have time to learn what suits you best. All that is important is that you learn and try and evaluate and then adjust and start over again. When I started I could do no more than 2 mins floor exercises. Now I can spend a day in the garden cutting wood, moving rubble, digging etc. Typically my bloods are in the 5s. It is true what they say, diet and exercise makes a big difference for most type 2s. The only thing you have to do is work out what you can eat, what suits you, and what sort of activity you like to do. Just, don't ignore it. It will not go away on its own.