My sleep quality has been worse than usual lately. I tend to fall asleep around 22.00-00.00, but then wake up at about 04.00 and sometimes don't get back to sle

My sleep quality has been worse than usual lately. I tend to fall asleep around 22.00-00.00, but then wake up at about 04.00 and sometimes don't get back to sleep after. It's degraded over the last few weeks, so something for me to work on.