Why not to plan too rigidly in advance.
A june swarm (not a huge one, by any means), with no feed at the time slowly built up over last summer. No honey harvested from it. It continued to build right through to November when stores and brood (a lot) were filling all their 14 x 12 frames. I thought she might just continue to lay, and lay and lay.... They were still stuffing in extra stores, even then. The main problem was clearing stores for brood space this spring - as winter only lasted about 2 months! In the end she was laying upstairs as well.
Point is you need to be considering all the 'on-the-ground' factors like the location (Scotland or Southern England, urban or arable farmland, etc), the weather (night temperatures are important as well), what is happening with your garden plants, strength and health of the colony, hive size, etc, and not sticking rigidly to hard and fast rules.
If you get it wrong you can always resort to candy/fondant after Christmas. Most only have a relatively few colonies to look after and winter bee jobs are in short supply (if you have 'sorted' early for the next season) at this time anyway.
If in the back garden, even better for keeping an eye on them.
The big boys, 100 hives or more, cannot give each hive exquisite individual attention at this time (warm daylight hours are in short supply) so it's 'belts and braces' get the job done as planned, before dispensing with the part-time seasonal labour.
By all means, be ready. But take note of what the bees are doing. Seasons are changing wildly of late. Maybe not 'Global Warming', just 'Climate Change'. Whatever it is the bees generally cope.
Those with one hive and little experience will worry. They can not unite colonies, for example.
Those with ten hives and twenty years experience will say feed in September/October but will cheerfully alter the timing by 3 weeks as necessary, unite weaker colonies, add saved frames of stores, have a couple of over-wintering nucs as back-up, etc.
This is where your local association assistance is worth far more than an international forum. They have that experience. End of sermon.
Regards, RAB