Hi, we would like to tell you please follow these steps:
1. Open Samsung Gear on your smart phone.
2. Open Samsung Health.
3. Select the "Sleep" category.
4. Select the dots in top right corner beside "Share".
5. Select "Set Target".
6. Use the sliders to change your bedtime and wake time.
Thanks, oddly with the sleep timing problem, it started recording steps while i slept too. I reset my watch but it didn't work. But this time I will reset it and not allow it get my info from backup, and will reinstall samsung health first. I think that is close to the steps you have taken.