Retinopathy goes through stages - background retinopathy, pre-proliferative (or non-proliferative) retinopathy and proliferative reinopathy. Generally, only proliferative retinopathy requires treatment with laser/injections (although it may occasionally be given if pre-proliferative retinopathy is so severe that it is thought that it will soon convert to proliferative retinopathy).
Sometimes poor control followed by tight control can temporarily worsen retinopathy although it is beneficial in the long term. There is a school of thought that the current state of retinopathy reflects diabetic control about 3 years ago - you may find that your pre-proliferative retinopathy does not progress and may even improve.
At the moment, the best plan is to keep good diabetic control (blood glucose, blood pressure and lipids) and make sure you attend your eye appointment when it comes.
https://www.nhs.uk/conditions/diabetic-retinopathy/prevention/
Pre-proliferative retinopathy has quite a range and the fact that your appointment is not another 9 months suggest that you are near the bottom of that range. However, if you do experience any symptoms (floaters, flashes, patchy vision, blurred vision etc.) don't wait for your next appointment but seek help as soon as possible.