What it's really supposed to say:
Last semester, I studied Italian. But this semester, I have a lot of classes, so I'm not studying Italian in school (or like.. I don't have an Italian class). I do not want to forget because next semester, I have to study Italian again. I plan to practice writing [by? How would I say that?]one essay once a week, from next week until October. I hope you guys will read and check! Thank you!
I hope I'm not too far! :P