Hello! I just purchased my first Apple Watch and have been playing with it today... i can’t seem to figure out if there is a way to turn on sleep mode in the Watch without also enabling it on my iPhone? I’d like to keep the watch on while I sleep to use sleep tracking, but without alerts or the screen on. Putting the Watch on Sleep mode or DND also puts my phone in Do not Disturb mode. Is there to do that on the Watch only and make sure it tracks my sleep? Thanks!