I understand the 3 feet 3 miles theory, my question is if I stick to that theory and want to move them say 20 feet how long should I wait between each 3 feet and would the time of year or weather have any influence on things
Thanks in advance
Time of year - or specifically weather - does matter.
During winter, when the bees aren't flying at all for weeks on end, you can move them whatever distance (in one go), but particularly carefully and gently so as to avoid shaking bees off the cluster.
Its a bit late for that now, as with the milder weather, most of the bees will have been out on one day or another, and refreshed their memory of where home is.
So, to moving "little by little". At this time of the year, I'd be leaving them in the same place for several days - whereas in midsummer (with all flying bees likely to go out at some point every day) I'd be relaxed about moving it every single (good) day.
The other aspect is that in summer, you can be much more relaxed about how long it might take the bees to find the hive entrance, whereas, in very early spring, bees that can't find the entrance promptly are going to chill quickly and die. No such risk in warm weather.
The "three feet" part is a simplified idea of a simplified rule of thumb!
The maximum move distance depends on the movement direction and the surroundings.
You can move the hive furthest, if you move it 'backwards' - away from its own entrance. The bees will arrive home, and while it isn't there, it is directly in front of them!
Moving it 'towards' the entrance confuses the bees somewhat, and I'd only move it a hive-width sideways (18 inches?)
So, best to begin by rotating it so the move can be 'backwards'.
I would not want to rotate as much as 45 degrees in one step at this time of year.
Then there's the conspicuousness of the hive. If it is in amongst other bee-visual clutter, its is going to be harder for the returning bee to see where it has gone (their eyesight is surprisingly poor and low-res - its also pretty weird, seeing polarisation and uv for example). Moving a brightly-painted hive backwards across an open space, I'd be relaxed about moving it six feet or more. But moving a wooden hive just a couple of feet to the other side of a six-foot high wooden fence? I'd either take out the fence for a while, or move them step-by-step the long way, right round the end of the fence.
Think about what you are doing (from the bees point of view - sometimes literally!) and don't follow 'rules' blindly.