Persist last sound + last timer settings

I’d like to be able to just open the app and click “play” and for it to play the last sound I had selected with the previous timer settings.

Use case (examples):

1) I start the app using a shortcut (Apple Shortcuts) routine with the “Open app” command before going to sleep

2) I wake up in the middle of the night and I need to quickly start my favourite soundscape without having to interact too much with my phone (while also not wanting the sound to play all night)

thanks