I'm sorry you're struggling to rest. For some it comes easy to sit back and chill, sadly others have to force themselves to take a breather. I can sure relate to your comments on attention span. Even worse for me was memory! I couldn't remember something my husband said five minutes earlier. It was awful and frankly frightening to me. Frustrating side effect for someone who normally has a good memory. As expected, it slowly eased.
It's helpful to find things to do while sitting as you did last evening enjoying your playlist while playing games on your phone. There are always movies to watch, or a Netflix series, you could purchase an adult coloring book and fresh box of colored pencils, read books, page through magazines, engage in online games...as you've done. Connect with friends and family through phone calls, knit, crochet, write or email Thank You notes to those who've helped you, meditate or pray, start a Pinterest acct if that interests you. Peruse Houzz, if home decor is your thing. Work on assembling a puzzle if you're comfortable sitting on a chair for any length of time.
Don't forget a car ride (passenger) as a respite from the boredom, or even sitting outside in the fresh air and sunshine listening to the sounds of nature, very calming and relaxing. It's early days for you still, but soon enough you'll feel the weeks clicking on by. One week anniversary already tomorrow. Woohoo!
I hope you enjoy the evening and have a wonderful week!
@Supersonic