temporary,

You should not be sleeping other than your normal night time sleep period. Daytime sleep, except for the occasional short nap, disrupts proper night sleep. Proper night sleep with all of the different stages of sleep is the most important. Neurons heal during the REM sleep stage. Toxins get flushed from the brain during the slow wave sleep stage.

Low stress brain stimulation is best. Nothing that causes excitement or adrenaline. Action video games, no. Working on puzzles online or doing games like Minesweeper, Free Cell, Solitaire, Spider, are fine unless your eyes start to fatigue. If you need to put in extra effort to focus and understand, take a break. Minecraft might be OK if it does not over-stimulate you.

Any time you feel a bit of fatigue or a need to focus harder, take a break. Maybe move to a different activity or take a short walk.