Hello
@Tee_Rockz , and welcome to the forum!
It's a lot to take in at first, but you don't want to drop too far too quickly.
It takes time and trial and error to find the right insulin dose for you. If you overdo the insulin you'll go too low, if you overdo by a lot you may go too low too quickly to react, especially as you haven't experienced a hypo yet.
At a week in 159 is a very nice number to see!
Are you on 2 insulins? If so, have you made a start with adjusting the amount of bolus/mealtime insulin to the amount of carbs you eat?
That will be the way to go when you and your HCP have found your rough doses.
What you can do now is check every package of everything you eat and check the amount of carbs per 100 grams and try to work out how many carbs will be in a meal or a snack. For unpackaged foods you can use google, and a lot of people like the Cals & Carbs app and book.
You'll likely start to see patterns between your bg, the amount of carbs you ate and the amount of insulin you took. The more information you have to take with you to your next appointment, the better they can help you work out the right doses for you.
People on this forum mostly use mmol/l as the unit for blood glucose, as that's what's used in the UK. You use mg/dl, which is perfectly fine, but you may want to keep a chart or converter on hand when reading on the forum and the rest of the internet.
Hba1c, the 3 monthly value is measured in different units as well. I like this chart to quickly look things up when reading, as it has both hba1c and bg.
Good luck, and please take your time! It's a marathon, not a sprint!