Day night became same

When you stay at home for long time; day, night, month everything became same. It’s difficult to remember what the current date is running. Now a day I only try to remember what is the time? Is it time for taking food and medicine? And what is the date? Is it schedule date to visit doctor? Now I don’t have any specific sleeping time. Whenever I feel bad I had to take rest in bed. Some times I fall a sleep. So whenever I feel sleepy I sleep, other wise stay awaken. No matter weather it is day time or night.