I don't use them much, so not really. Like dry hops and oak, there's a quantity + contact time aspect in play. The more you use, the faster the flavor will change, and the more critical timing becomes.
Pull off some, put it in a 1L pop bottle, and experiment. Then scale up. Or be ready to taste every day. Either/both work.
Trust your palate. "Overpowering" is subjective, and you're the person who matters most, so do it to your taste.