So basically what I do is make a checklist. You have microsoft to do.
So my checklist looks like this:
Wake up
Brush teeth
Do not sleep after waking up
Morning snack
Coffee time
Do not watch TV
Revise Economics pages 115-120 (takes me about 15 minutes)
Revise Physics topic 13 (takes me about 30 minutes to go over the content, equations and answer a few questions)
Revise Maths topic 6 (takes me about another 30 minutes)
Take a break
Revise Economics 120-125
Revise Physics topic 14
Revise Maths topic 7
Eat Lunch
And so on...
got it? So plan it, make sure you KNOW what youre supposed to study. Hope that helped