This is a topline picture of what you need to do to manage your hives over autumn. To manage your colonies well you will need to adapt their natural patterns with your aims.
Replace Queen if needed
Start to reduce hive size down to one brood box
Ensure there's plenty of honey and pollen stores for bees during winter
Check brood frames for signs of AFB
Check brood frames for varroa and treat
Check bees to ensure they're healthy and free of disease to get through Winter