Shame you can't do this with something like juggling. :D
I suppose you can somewhat metaphorically replace speed with numbers there. In that juggling four balls is a lot like three, but faster. Getting the initial three going, though... Grrr.
You can practice with two balls, sound the same motions you would with three. And if you really want to focus you can practice making a consistent toss with one ball. Two is probably better bang for the buck.
Right, I was just pushing the idea that you can't always literally slow things down. That said, no reason you couldn't pantomime juggling really slowly. To be honest, I wouldn't be surprised if that is a legit path to getting going?
Even dumber, for me, is that I can easily juggle two in either hand. Try to do the same in both hands at the same time? Brain basically recoils in horror.
I suppose you can somewhat metaphorically replace speed with numbers there. In that juggling four balls is a lot like three, but faster. Getting the initial three going, though... Grrr.