I've been using flux/twilight for a while. And now iOS has night mode built-in. I think it's really helped.
When I was young, I was staring at the white/blue light all night long. It's taken years to get my light cycle fixed, along with the proper habits to maintain it. The hormones are still kind of fucked tho...
You probably know about Kruse's fancy house. He has a kill switch for the electrical line to his bedroom (or the entire floor?) and shuts off wifi, too.
I've never been able to kill wifi.. just the thought makes me anxious.
I try to keep my bedroom as dark, quiet and cool as possible. I've been wearing earplugs for the last 5 years and they've really helped.