Everything worked fine on my previous iPhone 11 Pro and Series 4 watch (running iOS 15 and watchOS 8 respectively), but for some reason after pairing to the new phone, sleep mode no longer Yeah I get the sleep mode, but it has to be drawing some power.
into Sleep Mode immediately, as long as power. Especially when old Programs run on Windows 10, 8. Then, allow your Switch to fall asleep on its own to continue downloading. You can also get there by pressing Win + I and navigating to System > Power Options.