So, my advice is that you don't have to write every day. I know, this kind of is against the entire point of the thread, but there is no reason to push yourself to do something that you can't. If you are trying to fit in writing on school days, but your evenings and study halls are busy, don't stress. I write on Saturdays, because I have time to write then. So write when it makes sense to. If you can write every day, you should. If you can write a few times a week, that's okay.