I sometimes woke up around 2AM and would have difficulty to fall back sleep. I then either did some coding or watched some movies and could fall back around 6AM

I sometimes woke up around 2AM and would have difficulty to fall back sleep. I then either did some coding or watched some movies and could fall back around 6AM. But then the quality was so bad that the whole day was ruined. I had no issue falling sleep for the first time so wondering if there is anything to do about it.