I recently got the Vivoactive 4 and I was expecting the sleep tracking features to be similar to the Vivoactive I had years ago, but instead my watch doesn't even track my sleep unless I enter my sleep and wake times manually on the app immediately after I wake up. I set my "usual" sleep and wake times in the app, though those are only accurate to within about an hour. I've been reading forum posts and help articles for a week and I still can't figure out what's going wrong-- how do you get the Garmin app to show your sleep data without manually entering information every single morning?