There is no right answer for how long to wait, other than long enough.
Long enough could be two minutes or two days.
Been rattlin deer for 30 years. Every set up is unique, even in places I've rattled a hundred times.
Never know what will happen, never know if I left "too soon" even if I was there all day.
While it is near impossible to make big noise with little antlers, it is easy to make just a little noise with big antlers.
More importantly to "resident" deer, they will quickly become educated to your game.
They will recognize the sound of your antlers and the style of your rattling.
They will know that you are making the same noise in the same place.... even know that you entered the domain from the same path.
You will need to change up your game if you are playing the same opponent.