Anything can turn into idolatry; it’s all about how we relate to each thing. (Whether we’re talking about saints, popularity, food, etc.)
First up, remember that you don’t have to show devotion to a saint at all if at this particular time in your life, you find it distracting you from God (rather than drawing you closer to God). Use your own judgement and prudence to keep your spiritual life healthy in your own circumstances.
Second up, and it’s hard to give too-specific advice without knowing exactly how you’re ‘showing devotion’ currently, but maybe take a second look at the language you use when you pray to saints or think about them? Like, make sure you’re asking a saint to pray to God for you (just like you’d ask any human on earth to pray to God for you), rather than asking a saint to ‘do’ something for you, as if they themselves have supernatural powers. Try to moderate your language so that nothing you say to a saint is different from what you’d say to your buddy in the next pew at Mass, and it’ll probably be hard to consider your respect/relationship with that person (living or dead) to ‘distract’ you from God. Remember that the saints (living and dead) are examples for us, of a Christian life successfully lived, so it is appropriate for us to be encouraged by their example: by the example of the great goodness God graced into their lives, and by the example of their human response to God’s graces. If that’s what we’re seeing in a saint’s life (the encouraging example of how good God was to them, and how admirably they cooperated with God), I’m not sure how we could find ourselves ‘distracted from God’ when we see them. Rather, every saint becomes a window through which we can see God more clearly.
Is there something specific about your current approach to Christian saints, that you particularly worry is problematic, that we could help with?