Welcome to the forum
@DianeD
It can be such a whirlwind at the beginning. Everything feels unfamiliar (and scary) and there’s a natural urge to want to get things fixed and sorted straight away.
The chances are your levels had been running high for a while before you had any symptoms that sent you to the Drs, and your body will have adjusted to them and worked around them to an extent. One of the reasons for starting those newly diagnosed on lowish doses is to allow their glucose levels to coast back down fairly gently, rather than lurching from running high straight back to the normal range. A rapid change like that can put stress on the fine blood vessels in the eyes and supplying nerve endings, and can even cause temporary damage and nerve pain. So a more gentle slope is a wise precaution.
But as
@Inka says, you don’t really want to stay in the high teens either. So while your doses are being adjusted, you might want to make a start calculating, adding up, and estimating the carbohydrate content of your meals. It’s good practice, and will soon be something you’ll be able to do by eye.
If you notice that one meal choice frequently results in high levels that don’t come back down, while your doses are fixed you can try a slightly smaller portion (say, knock off 5-10g of carbs) just to take the edge off the post-meal level?
Keep going, and hang in there. We are rooting for you, and we know how overwhelming this part of your diabetes ‘career‘ can feel.