Fatigue, memory, concentr. Advise!

Hi there, From what you've listed down here, these seem to be symptoms of mild depression. You have mentioned the duration of sleep, but you have not mentioned about the quality of sleep( whether it is  a restful sleep, do you feel refreshed after waking up). You shouldn't go for too long without addressing these problems. The best way to do that, is by seeking a professional consultation. Meanwhile, include at least 30 mins of exercise in your dailty routine, along with focus on your diet. Also, the lack of sleep on weekdays, can't be compensated with long hours of sleep over the weekend. In fact, it messes up the body's circadian rhythm. Stick to a defined time for sleep and diet. I hope this helps.