Hello @Brittm, welcome aboard to the Fitbit Community. So far it's not possible to have steps from your phone using S Health and sync the data with your Fitbit app.
If this is something in which you're interested, please visit this feature suggestion: S Health & Fitbit integration. Feel free to contribute with your vote and comments. This is a great way to let our developers know what you'd like to see in the future!
There is another post from @gdio53 that might be of your interest too. Please take a look here.
I appreciate your understanding while we work to improve the Fitbit experience.
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