How did you form the habit of disconnecting; At a certain time, as part of an evening ritual, with a block app, something else?

I do a combination of things. My phone is set to go into bedtime mode (black & white screen, do not disturb, etc) one hour before my prescribed bedtime. I then finish up anything I need to do on my phone in the next few minutes and plug it in to charge in my bedroom, before returning to my living room to finish winding down with a cup of tea and a book. Having something else to distract me in the meanwhile keeps me from wanting to go back on my phone.