Not sure if you’ve figured this out yet or not, but in my own graph there is a Timeline node. In that node there is a NewTime plug. I promoted that to a variable and made it editable. I can change the speed of my transform animation by changing it, though the values are rather high to actually see the difference with what I’m doing.
I suppose it depends on what sort of animation your using, but with animation there is always time. Find what controls the timing of the animation and make that editable and you should be set.