Strava syncing with multiple devices - new user

Hi

i have multiple Garmin devices for run, swim & bike but have just added a Vivofit 4 to that collection to try and get daily steps up.

I usually sync my other devices to Strava and Garmin Connect is doing that automatically for every short walk I do, which is undesirable. How can I stop Vivofit 4 from automatically uploading to Strava?

Thanks for your help.