You might benefit from a fast acting insulin so you can lower those numbers better.
Originally I was misdiagnosed as a type 2 and I ended up refusing the different medications because they were making me sick. I commonly ended up in the 200 and 300’s. (even 400’s sometimes) I literally was handed Lantus and told to start at 10 units a day and raise it 1 unit every two days until it works. I had to ask how to give a shot even. And when I was given a fast acting insulin I was told 1 unit for every 3 carbs you eat and no other information. A real lack of help.
So that brings me to telling you, even Lantus can make you drop too low. At your numbers right now, it’s not likely to happen, But as you get closer to the right dose, it can happen. I would advise you to carry and keep by your bedside a fast acting hypo treatment like glucose tablets. But honestly, you will have better success with control with a fast acting insulin added but also more of a possibility of hypos.
But the reason a fast acting can really help is a long lasting can’t always cope with the food you eat. A long lasting is meant to make up for what your liver makes and in a type 2 sometimes some food you are eating and is really supposed to be more of a consistent amount each day. . A fast acting can be adjusted for need.
And that brings me to the next thing. 40% of type 1’s are misdiagnosed as type 2’s at first. It’s still very common and medication and diet changes work at first because you still produce some insulin literally for many years if you are a LADA/type 1.
I am not saying you are a type 1, I just like to make sure people are informed because we are misdiagnosed so much. But if things don’t end up making sense, you could be a type 1 and not a type 2. I was misdiagnosed for over 8 years even though I asked if I could be a type 1 because I had an uncle that was a type 1. I was told no several times and never tested until I switched doctors. That turns out to be one of the common ways we are finally diagnosed right.
If you think you might be you will want an antibody test. If positive it is a sign of being a type 1. Some people test negative but don’t make insulin and they don’t know why. The next test is a C-peptide test. If it’s low or low normal it’s a sign of type 1, as you are losing the ability to make insulin as time goes on. If it’s high or high normal it’s a sign of type 2, because you are insulin resistant and you make more insulin to try to make up for it.
If you can afford it a CGM, a Libre will be the cheapest route if you self fund. It runs about $35 for a 14 day sensor and as long as you get the 14 day and not Libre2 there is a free ap you can add to most smartphones that you can use as a reader. It will give you a 24/7 reading of your blood sugars. You will still have to finger stick some as you have to check it’s accuracy. But it makes life a lot easier.
Most want a goal under 7.5% A1c at least. A lot aim for lower. Go for baby steps at first for one until you figure out what amount of insulin you even need.
7.5% A1c equals an average of a BG level at 136.
https://www.diabeteschart.org/mgmmol.html
Edited with some additional information.