How to keep organized?

I’m a high-school sophomore, I learn 6 days a week.
Sunday 6 periods - until 1:20
Monday 8 periods - Until 3:05
Tuesday 8 periods - 3:05
Wednesday 7 periods - 2:20
Thursday 6 periods - 1:20
Saturday - 5 or 6 periods (very rarely 2 ) - until 9:30 or 11:45 or 12:30

I have a Psychometry prep course on Friday which takes up all the time from 16:30 till 21:00

Ignore this thread I posted it by mistake, if you;re interested in replying look at the other thread I;m posting