The sleep timer works OK as you fall asleep. If I wake up again in the night I need to fiddle about with my phone to reset the sleep timer to use it again, whic

The sleep timer works OK as you fall asleep. If I wake up again in the night I need to fiddle about with my phone to reset the sleep timer to use it again, which wakes me up further. I would rather it just assume that it would stop playing after 30mins, if I ever play anything at night.