As said with an HbA1C of 49mmol/mol you are just in the diabetic zone so with some changes to your diet you should be able to get it down, the number to aim at is below 42mmol/mol. Many people on here started with figures much much higher and were put on medication but where you are that shouldn't be needed.
Reducing portions of high carb foods like cereals, potatoes, bread, rice, pasta and cakes, biscuits, pastry and sugary drinks hopefully will do the trick. Basing your meals on meat, fish, eggs, cheese, dairy, salads and vegetables with reduced portions of high carb foods give you plenty of options for tasty meals.
It is fantastic you have a monitor so having a testing regime to give you useful information is a good idea. Testing before you eat and after 2hours will tell you if you have tolerated the amount of carbs if the increase is less than 2mmol/l and ideally no more than 8.5mmol/l but those are numbers to aim at but which you might not get to start with.
The numbers you gave because they were not before and after the meal it is hard to say if Ok but I would suggest the post meal of 8.9 was a bit higher than desirable. So if a before meal is 5.8 you don't want an after of more than 7.8, otherwise your meal was a bit carb heavy.
It is all a learning process with diabetes, people often say 'every day is a school day' even for those years into their diagnosis. So for you it is early days and you are in a good position to manage it.