ASMR is a nice thing to sleep to, as long as you're willing to try various different "trigger" noises/scenarios. My first ones were brushing mics and hair, tapping things and ear massages, pretty basic stuff, but everyone's different!
Yeah, same as the others, watch series you may have had a slight interest in seeing before, rewatch old classics if you want, play all the longer games first then shorter games towards the end of your wait, helps you feel a bit more accomplished.
Perhaps do some random crafts just for shits and giggles? Quilling is quite simple for example once you get the basics down, and you can make some small cute things after some practice. I'd say fuck it and decorate a wall in my home even if i'm not allowed to (though perhaps do that closer to the time), stuff like that. Sometimes doing random creative stuff makes you think, or alternatively numb your mind some more, whatever is more pleasant in that moment usually happens.