Welcome to the forum, one cautious note is what people might do is very individual as it will depend on what medication they may be taking and how they manage their condition.
With an HbA1C of only 53mmol/mol you are not very far over the diagnostic threshold of 48mmol/mol and many GP would give somebody the opportunity for 3 months to make dietary changes and try to get more exercise before starting medication and it is up to you whether you are prepared to give that a shot and you would need to modify your diet anyway even with the medication.
Many find a low carbohydrate approach successful and this link should point you in the right direction,
https://lowcarbfreshwell.com/, it is based on the suggested no more than 130g carbs not just sugar per day. A bit of a hard time to start this but use the time to learn all you can, there is no great rush but do something you must.
As far as testing is concerned then people do test to enable them to have control over their condition rather than waiting for the periodic Hba1C. But the testing has to be for a purpose otherwise it is a waste of time. To learn what meals you are able to tolerate people test before eating and after 2 hours and if the increase is no more than 2-3 mmol/l then the meal is fine, as your levels come down then 4-7mmol/l before eating and no more than 8-8.5 2 hours post meal is what to aim at.
People also test in the morning /fasting to check progress day to day, week to week etc or if they feel unwell.
This means quite a bit of testing initially but the meal testing will reduce once you establish how many carbs per meal will keep you within those limits.
It is unlikely your prescription will cover enough strips and you are lucky to have even been given a monitor but many self fund a monitor and strips so if you want to buy more do check the price as they may be more expensive that those for a different monitor so in the long run you would save money.
Sorry for the ramble but I hope it is helpful.