Hello and welcome,
I think that as you are on medication you will need to be careful about reducing your carbs- what you have described though is a lot more carbs in each meal than I would have in an entire day. Maybe a place to start would be tp actually calculate the carbs in each meal together with the readings you get. Then aim to reduce them gradually. But check everything. When I started I was trying for less than 20 grams a day but assuming things like cucumber and tomatoes had zero or very few carbs- so wrong. As I am extremely low carb I don't eat either of those things let alone an apple or a piece of toast.
You will need to work out how many carbs your body can tolerate. Start with what you are currently eating.